diff --git a/science/htcondor/Portfile b/science/htcondor/Portfile
index 219049bb0aa..2a721e61e87 100644
--- a/science/htcondor/Portfile
+++ b/science/htcondor/Portfile
@@ -7,6 +7,8 @@ PortGroup               boost 1.0
 PortGroup               active_variants 1.1
 
 github.setup            htcondor htcondor 8_8_1 V
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from     tarball
 version                 [strsed ${github.version} g/_/\./]
 revision                3
 maintainers             {aronnax @lpsinger}
diff --git a/science/iAIDA/Portfile b/science/iAIDA/Portfile
index be468665637..00779689fc0 100644
--- a/science/iAIDA/Portfile
+++ b/science/iAIDA/Portfile
@@ -6,6 +6,8 @@ PortGroup           github 1.0
 PortGroup           boost 1.0
 
 github.setup        apfeiffer1 iAIDA 1.1.4 iAIDA-
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 revision            8
 name                iAIDA
 categories          science
diff --git a/science/ifeffit/Portfile b/science/ifeffit/Portfile
index f2161d8daf5..1d58b46a8e8 100644
--- a/science/ifeffit/Portfile
+++ b/science/ifeffit/Portfile
@@ -5,15 +5,16 @@ PortGroup           github 1.0
 PortGroup           compilers 1.0
 
 github.setup        newville ifeffit 1.2.13
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 revision            8
 categories          science
-platforms           darwin
 license             Permissive
 maintainers         {nist.gov:joe.fowler @joefowler} openmaintainer
 
 description         IFEFFIT is a program and programming library for analyzing x-ray absorption fine-structure (XAFS) data.
 
-long_description    ${description} \
+long_description    {*}${description} \
     IFEFFIT1 gives an interactive method for fitting XAFS data using calculations from \
     FEFF. It is based on the fitting program FEFFIT of the UWXAFS3.0 Analysis Package. \
     It is NOT actively maintained since 2014. Consider port py-xraylarch as a replacement.
diff --git a/science/inspectrum/Portfile b/science/inspectrum/Portfile
index f894960ab6d..369cf44f05a 100644
--- a/science/inspectrum/Portfile
+++ b/science/inspectrum/Portfile
@@ -7,6 +7,8 @@ PortGroup           qt5 1.0
 PortGroup           app 1.0
 
 github.setup        miek inspectrum 98b998ff3830a129b67148d2b97bdc70c395c12a
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 version             20220326-[string range ${github.version} 0 7]
 checksums           rmd160  a2dc95313a57318992b06549b75559e1768641ed \
                     sha256  409b66db27c53070b6d3882b7dd14e37d0210e374559d77f921130dfb551db47 \
@@ -17,9 +19,8 @@ categories          science comms
 maintainers         {michaelld @michaelld} openmaintainer
 description         Provides augmented functionality for GNU Radio: inspectrum realizes \
                     signal analysis abilities in typical block-structure
-long_description    ${description}
+long_description    {*}${description}
 license             GPL-3
-platforms           darwin
 
 depends_lib-append \
     port:fftw-3-single \
diff --git a/science/ismrmrd/Portfile b/science/ismrmrd/Portfile
index 3f3b546fb30..81a7a443775 100644
--- a/science/ismrmrd/Portfile
+++ b/science/ismrmrd/Portfile
@@ -7,10 +7,11 @@ PortGroup               conflicts_build 1.0
 PortGroup               boost 1.0
 
 github.setup            ismrmrd ismrmrd 1.14.1 v
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from     tarball
 categories              science
 maintainers             {eborisch @eborisch} openmaintainer
 license                 permissive
-platforms               darwin
 
 # Keep; can need rebuild for HDF5 on version incompatibilities
 revision                0
diff --git a/science/iverilog/Portfile b/science/iverilog/Portfile
index 62135c33029..13d556e9ef1 100644
--- a/science/iverilog/Portfile
+++ b/science/iverilog/Portfile
@@ -4,12 +4,13 @@ PortSystem          1.0
 PortGroup           github 1.0
 
 github.setup        steveicarus iverilog 12_0 v
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 version             [string map {_ .} ${github.version}]
 revision            0
 set major           [lindex [split ${version} .] 0]
 categories          science
 license             GPL-2+
-platforms           darwin
 maintainers         {keeh.net:paf @padf} openmaintainer
 
 description         Icarus Verilog
diff --git a/science/libad9361-iio/Portfile b/science/libad9361-iio/Portfile
index fcdbc378ab5..df695d86f99 100644
--- a/science/libad9361-iio/Portfile
+++ b/science/libad9361-iio/Portfile
@@ -8,12 +8,13 @@ name                libad9361-iio
 categories          science comms
 maintainers         {michaelld @michaelld} openmaintainer
 description         ${name} is an IIO AD9361 library for filter design and handling, multi-chip sync, and more
-long_description    ${description}. This is a simple library used for userspace, which manages multi-chip sync (on platforms \[FMCOMMS5\] where multiple AD9361 devices are use) can create AD9361 specific FIR filters on the fly. Provides the GIT master branch version, which is typically updated every few days to week.
+long_description    {*}${description}. This is a simple library used for userspace, which manages multi-chip sync (on platforms \[FMCOMMS5\] where multiple AD9361 devices are use) can create AD9361 specific FIR filters on the fly. Provides the GIT master branch version, which is typically updated every few days to week.
 
 license             LGPL-2+
-platforms           darwin
 
 github.setup        analogdevicesinc libad9361-iio 43643ab0ef8a3fbdb6c7595f42842f534a291664
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 version             20220908-[string range ${github.version} 0 7]
 checksums           rmd160  84dd84d07298dde4edcf5ab4cdd4754db2b8e3f0 \
                     sha256  6721f5ac7e02e9cb769c4db1e1245e86a3b8047f78d2f3c95c5d21e656dc7ed3 \
diff --git a/science/libccd/Portfile b/science/libccd/Portfile
index 6f84d8e5219..12162389e3f 100644
--- a/science/libccd/Portfile
+++ b/science/libccd/Portfile
@@ -3,13 +3,14 @@ PortGroup  cmake 1.1
 PortGroup  github 1.0
 
 github.setup        danfis libccd 2.1 v
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 epoch               20190111
 revision            1
 categories          science
 maintainers         nomaintainer
 description         A library for collision detection between convex shapes
-long_description    $description
-platforms           darwin
+long_description    {*}$description
 license             BSD
 configure.args-append -DCCD_DOUBLE:BOOL=ON
 
diff --git a/science/libfec/Portfile b/science/libfec/Portfile
index 562db6d9c39..e233abb709d 100644
--- a/science/libfec/Portfile
+++ b/science/libfec/Portfile
@@ -13,6 +13,8 @@ long_description    implements several popular forward error correction \
     implemented with digital signal processing (DSP).
 
 github.setup        fblomqvi libfec c5d935f42a79221871ff50e75d3971cf3e87be7c
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 version             20210201-[string range ${github.version} 0 7]
 checksums           rmd160  b781d1422b08858d89a1317756f4e3a94e762173 \
                     sha256  f75985bb4a8638742b2f4638ea7a0d7d57a1c738f491e595d1f448f1675366e5 \
diff --git a/science/liblsl/Portfile b/science/liblsl/Portfile
index 1cac47f3743..10b669834f5 100644
--- a/science/liblsl/Portfile
+++ b/science/liblsl/Portfile
@@ -11,6 +11,8 @@ boost.version       1.81
 license             MIT
 
 github.setup        sccn liblsl 1.16.2 v
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 revision            0
 categories          science
 maintainers         nomaintainer
diff --git a/science/libminc/Portfile b/science/libminc/Portfile
index c05fb63ede3..c2b319b1781 100644
--- a/science/libminc/Portfile
+++ b/science/libminc/Portfile
@@ -6,6 +6,8 @@ PortGroup           github 1.0
 PortGroup           active_variants 1.1
 
 github.setup        BIC-MNI libminc 2.4.06 release-
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 revision            2
 
 categories          science
diff --git a/science/libosmo-dsp/Portfile b/science/libosmo-dsp/Portfile
index cdec1bfecfd..63b6c8d4b59 100644
--- a/science/libosmo-dsp/Portfile
+++ b/science/libosmo-dsp/Portfile
@@ -4,13 +4,15 @@ PortSystem          1.0
 PortGroup           github 1.0
 
 github.setup        osmocom libosmo-dsp 6561cfa8da6ddba35294ede452c1e5771b56e806
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 version             20170318
 checksums           rmd160 46c7be94a9cc7a68a35bd05135af360961105603 \
                     sha256 03f9218a4f2f02481163bdc807b56693e03f72ff1b429e059a4d69175ce35dad \
                     size   41977
 
 description         A library with SDR DSP primitives
-long_description    ${description}
+long_description    {*}${description}
 maintainers         {michaelld @michaelld} openmaintainer
 
 categories          science comms
diff --git a/science/libsbmlsim/Portfile b/science/libsbmlsim/Portfile
index cf7826a7b29..f34bcf964d2 100644
--- a/science/libsbmlsim/Portfile
+++ b/science/libsbmlsim/Portfile
@@ -5,9 +5,10 @@ PortGroup           cmake 1.1
 PortGroup           github 1.0
 
 github.setup        libsbmlsim libsbmlsim 1.4.0 v
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 revision            1
 categories          science
-platforms           darwin
 maintainers         {@funasoul gmail.com:funasoul} openmaintainer
 license             LGPL-2.1+
 
diff --git a/science/libsigmf/Portfile b/science/libsigmf/Portfile
index e570d1cc228..df3d9c6ed13 100644
--- a/science/libsigmf/Portfile
+++ b/science/libsigmf/Portfile
@@ -8,9 +8,11 @@ categories          science comms
 license             apache-2
 maintainers         {ra1nb0w @ra1nb0w} openmaintainer
 description         a header-only C++ library for working with SigMF metadata
-long_description    ${description}
+long_description    {*}${description}
 
 github.setup        f4exb libsigmf 8623f04c1e4e817ebcaacbe55265a7740da015a4
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 version             20201115-[string range ${github.version} 0 7]
 checksums           rmd160  279499167fbc999a4d33cd797a5896a9e393189a \
                     sha256  5930140b578ce180075a0b66e9a02a9b6b2bb43b554e788e8f8f9c52651d85a7 \
diff --git a/science/limesuite/Portfile b/science/limesuite/Portfile
index 1c27c39edae..3506712744e 100644
--- a/science/limesuite/Portfile
+++ b/science/limesuite/Portfile
@@ -21,6 +21,8 @@ subport limesuite-devel {}
 if {[string first "-devel" $subport] > 0} {
 
     github.setup    myriadrf LimeSuite c1b19b2370e42bd896eac2641470c10473992a41
+    # Change github.tarball_from to 'releases' or 'archive' next update
+    github.tarball_from tarball
     version         20220505-[string range ${github.version} 0 7]
     checksums       rmd160  21cb4d9e876da0c668f48f96840d39d4f002f4e4 \
                     sha256  0e53b95763e9f87125eeb3cfeb356beb743234266ae445e10b374db4a6710bd0 \
@@ -35,6 +37,8 @@ if {[string first "-devel" $subport] > 0} {
 } else {
 
     github.setup    myriadrf LimeSuite 22.09.1 v
+    # Change github.tarball_from to 'releases' or 'archive' next update
+    github.tarball_from tarball
     checksums       rmd160  b156ca0e2a16879853a9c0a053eb2d99dcece083 \
                     sha256  d5fe80e1c6695366dd6361e4fa7f363f5d850262b3510bd2a193a112969e9be5 \
                     size    5201126
diff --git a/science/linhpsdr/Portfile b/science/linhpsdr/Portfile
index 40b789d3a0d..4268e8bb9dc 100644
--- a/science/linhpsdr/Portfile
+++ b/science/linhpsdr/Portfile
@@ -11,9 +11,11 @@ platforms           darwin macosx
 license             GPL-3
 maintainers         {ra1nb0w @ra1nb0w} openmaintainer
 description         linHPSDR is an HPSDR application for Linux and macOS
-long_description    ${description}
+long_description    {*}${description}
 
 github.setup        g0orx linhpsdr 02361708dbdd1a1401a492af71f066c870a6aad3
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 version             20230106-[string range ${github.version} 0 7]
 checksums           rmd160  4ed601d904f20c54d91665c55d68dda4df4d5988 \
                     sha256  7b35a16de63925bbb2e8fba24591f40b3bd40612b15d98c5faa68d5a9dc65a1e \
diff --git a/science/liquid-dsp/Portfile b/science/liquid-dsp/Portfile
index a366678e07f..7380fd835d0 100644
--- a/science/liquid-dsp/Portfile
+++ b/science/liquid-dsp/Portfile
@@ -4,6 +4,8 @@ PortSystem          1.0
 PortGroup           github 1.0
 
 github.setup        jgaeddert liquid-dsp c3e0de7e89cdcc0ec5da9ccaeb5738496263d4c0
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 version             20221120-[string range ${github.version} 0 7]
 checksums           rmd160  9b6fccacfa720badbf9af90de2bf43dbd42fba6d \
                     sha256  96923d01f9ade2046a958db788c473fca95f14ed1e5c5f60a9756cb310b5a99f \
@@ -14,7 +16,7 @@ maintainers         {michaelld @michaelld} {ra1nb0w @ra1nb0w} openmaintainer
 
 description         liquid-dsp is an open-source signal processing library for software-defined \
                     radios written in C.
-long_description    ${description} Its purpose is to provide a set of extensible DSP modules \
+long_description    {*}${description} Its purpose is to provide a set of extensible DSP modules \
                     that do no rely on external dependencies or cumbersome frameworks.
 
 categories          science comms
diff --git a/science/luaradio/Portfile b/science/luaradio/Portfile
index 53237a87dbc..ec9aa89b9ff 100644
--- a/science/luaradio/Portfile
+++ b/science/luaradio/Portfile
@@ -4,6 +4,8 @@ PortSystem          1.0
 PortGroup           github 1.0
 
 github.setup        vsergeev luaradio 0.10.0 v
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 
 checksums           rmd160  5ae1dea898db338cb346aa95a8ef29d526e8dcb3 \
                     sha256  a12a692eed4ffa26f2dc57ac424350fd8df5a048abae75e835e5f5042667613d \
@@ -11,12 +13,11 @@ checksums           rmd160  5ae1dea898db338cb346aa95a8ef29d526e8dcb3 \
 revision            0
 
 categories          science comms
-platforms           darwin
 license             MIT
 maintainers         {@vsergeev sergeev.io:v} \
                     openmaintainer
 description         A lightweight, embeddable software-defined radio framework built on LuaJIT
-long_description    ${description}
+long_description    {*}${description}
 homepage            https://luaradio.io/
 
 depends_build-append    port:pkgconfig
diff --git a/science/luma/Portfile b/science/luma/Portfile
index 0207c027e67..133f9b08653 100644
--- a/science/luma/Portfile
+++ b/science/luma/Portfile
@@ -8,6 +8,8 @@ PortGroup           makefile 1.0
 PortGroup           mpi 1.0
 
 github.setup        cfdemons LUMA 1.7.12 Release_
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 name                luma
 revision            3
 categories          science
diff --git a/science/mcl/Portfile b/science/mcl/Portfile
index 2a9a238a6e2..1a3c1ade173 100644
--- a/science/mcl/Portfile
+++ b/science/mcl/Portfile
@@ -2,6 +2,8 @@ PortSystem 1.0
 PortGroup       github 1.0
 
 github.setup    micans mcl 14-137
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 revision        1
 checksums       rmd160  063e6415a0d23dcdb2fa8663fe62a95ec4f67f5d \
                 sha256  b5786897a8a8ca119eb355a5630806a4da72ea84243dba85b19a86f14757b497 \
diff --git a/science/ministat/Portfile b/science/ministat/Portfile
index 72d0662c094..8ea144c4cba 100644
--- a/science/ministat/Portfile
+++ b/science/ministat/Portfile
@@ -4,15 +4,16 @@ PortSystem          1.0
 PortGroup           github 1.0
 
 github.setup        codahale ministat 5f1a5b59077c2a7837a37454a548ecd12532b7f8
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 version             1.0
 categories          science
-platforms           darwin
 maintainers         ryandesign openmaintainer
 license             Beerware
 
 description         A small tool to do the statistics legwork on benchmarks
 
-long_description    ${description}
+long_description    {*}${description}
 
 checksums           rmd160  625d78eea43dccd89c5ae635a75e468f81b0a04c \
                     sha256  ad73993469df4a61c904cf22c7772bcfeb68bf0723aab2e162eaed48e1fbec61
diff --git a/science/multimon-ng/Portfile b/science/multimon-ng/Portfile
index 051e002606b..023c3351665 100644
--- a/science/multimon-ng/Portfile
+++ b/science/multimon-ng/Portfile
@@ -5,8 +5,9 @@ PortGroup           cmake 1.1
 PortGroup           github 1.0
 
 github.setup        EliasOenal multimon-ng 1.2.0
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 
-platforms           darwin
 categories          science comms
 license             GPL-2
 maintainers         {ra1nb0w @ra1nb0w} openmaintainer
diff --git a/science/mutationpp/Portfile b/science/mutationpp/Portfile
index f38a37e894d..4724f321c37 100644
--- a/science/mutationpp/Portfile
+++ b/science/mutationpp/Portfile
@@ -5,12 +5,13 @@ PortGroup               cmake 1.1
 PortGroup               github 1.0
 
 github.setup            mutationpp Mutationpp 1.0.5 v
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from     tarball
 name                    mutationpp
 revision                0
 categories              science
 license                 LGPL-3+
 maintainers             {@rdbisme gmail.com:rubendibattista} openmaintainer
-platforms               darwin
 description             The MUlticomponent Thermodynamic And Transport library for IONized gases in C++
 long_description        Mutation++ is an open-source library originally \
                         developed at the von Karman Institute for Fluid Dynamics, designed to couple \
diff --git a/science/nco/Portfile b/science/nco/Portfile
index a6689faf579..7a7f5e78908 100644
--- a/science/nco/Portfile
+++ b/science/nco/Portfile
@@ -5,6 +5,8 @@ PortGroup           compilers 1.0
 PortGroup           github 1.0
 
 github.setup        nco nco 5.3.1
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 revision            0
 maintainers         {takeshi @tenomoto} \
                     {me.com:remko.scharroo @remkos} \
diff --git a/science/ncplot/Portfile b/science/ncplot/Portfile
index 38faee6e729..d2740e8e807 100644
--- a/science/ncplot/Portfile
+++ b/science/ncplot/Portfile
@@ -4,6 +4,8 @@ PortSystem          1.0
 PortGroup           github 1.0
 
 github.setup        ncar ncplot 4.11.0 v
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 revision            2
 epoch               1
 
diff --git a/science/ncpp/Portfile b/science/ncpp/Portfile
index 6db47ced97e..fd69c723e13 100644
--- a/science/ncpp/Portfile
+++ b/science/ncpp/Portfile
@@ -4,6 +4,8 @@ PortSystem          1.0
 PortGroup           github 1.0
 
 github.setup        NCAR ncpp 2.3.0 v
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 revision            3
 
 categories          science
diff --git a/science/netcdf-cxx4/Portfile b/science/netcdf-cxx4/Portfile
index 2ccf5fa2809..c91117f1083 100644
--- a/science/netcdf-cxx4/Portfile
+++ b/science/netcdf-cxx4/Portfile
@@ -7,10 +7,11 @@ PortGroup                   github 1.0
 PortGroup                   mpi 1.0
 
 github.setup                Unidata netcdf-cxx4 4.3.1 v
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from         tarball
 revision                    1
 distname                    ${name}-${version}
 maintainers                 {takeshi @tenomoto} openmaintainer
-platforms                   darwin
 categories                  science
 license                     Permissive
 
diff --git a/science/netcdf-fortran/Portfile b/science/netcdf-fortran/Portfile
index 41b4ec70bd6..ec3728898e3 100644
--- a/science/netcdf-fortran/Portfile
+++ b/science/netcdf-fortran/Portfile
@@ -22,6 +22,8 @@ PortGroup                   github 1.0
 mpi.enforce_variant         netcdf
 
 github.setup                Unidata netcdf-fortran 4.6.1 v
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from         tarball
 revision                    4
 maintainers                 {takeshi @tenomoto} \
                             {@Dave-Allured noaa.gov:dave.allured} \
diff --git a/science/netcdf/Portfile b/science/netcdf/Portfile
index 5fcbbb92858..768a353249f 100644
--- a/science/netcdf/Portfile
+++ b/science/netcdf/Portfile
@@ -13,6 +13,8 @@ legacysupport.newest_darwin_requires_legacy 10
 
 epoch                       3
 github.setup                Unidata netcdf-c 4.9.2 v
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from         tarball
 revision                    5
 name                        netcdf
 maintainers                 {takeshi @tenomoto} openmaintainer
diff --git a/science/ompl/Portfile b/science/ompl/Portfile
index 278e7591cf6..a9c68a10ae5 100644
--- a/science/ompl/Portfile
+++ b/science/ompl/Portfile
@@ -12,6 +12,8 @@ description         The Open Motion Planning Library (OMPL)
 long_description    The Open Motion Planning Library (OMPL) consists of a set \
                     of sampling-based motion planning algorithms.
 github.setup        ompl ompl 1.6.0
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 revision            0
 homepage            http://ompl.kavrakilab.org
 platforms           darwin
@@ -62,6 +64,8 @@ http://ompl.kavrakilab.org/license.html#ricelicense"
         -DOMPLAPP_RESOURCE_DIR=${prefix}/share/ompl/resources \
         -DASSIMP_LIBRARIES=assimp -DASSIMP_INCLUDE_DIRS=${prefix}/include
     github.setup        ompl omplapp 1.6.0
+    # Change github.tarball_from to 'releases' or 'archive' next update
+    github.tarball_from tarball
     master_sites        https://github.com/ompl/omplapp/releases/download/${version}
     distname            omplapp-${version}-Source
     checksums           rmd160  800a090a0dcb45544974cd1b87093e8b57325915 \
diff --git a/science/openbabel2/Portfile b/science/openbabel2/Portfile
index 3cf62e84b96..3ce9aa82ca5 100644
--- a/science/openbabel2/Portfile
+++ b/science/openbabel2/Portfile
@@ -5,6 +5,8 @@ PortGroup           cmake 1.1
 PortGroup           github 1.0
 
 github.setup        openbabel openbabel 2-4-1 openbabel-
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 name                openbabel2
 conflicts           openbabel
 version             [string map {- .} ${github.version}]
diff --git a/science/openhantek/Portfile b/science/openhantek/Portfile
index d873a59a979..144ec7bd333 100644
--- a/science/openhantek/Portfile
+++ b/science/openhantek/Portfile
@@ -7,6 +7,8 @@ PortGroup           qt5 1.0
 PortGroup           app 1.0
 
 github.setup        OpenHantek OpenHantek6022 3.3.2.2
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 checksums           rmd160  9fdca2f18de576ee3991bf9fa83e04d4e3d82510 \
                     sha256  99a6cfa07406afc4130948488ede4c4806db045fdd589e90a94508d38cef65cd \
                     size    16322920
diff --git a/science/osmocore/Portfile b/science/osmocore/Portfile
index 7f23cf39c3f..6b9d895de94 100644
--- a/science/osmocore/Portfile
+++ b/science/osmocore/Portfile
@@ -7,7 +7,7 @@ PortGroup           legacysupport 1.0
 name                osmocore
 maintainers         {michaelld @michaelld} openmaintainer
 description         ${name} provides a set of C-language libraries that form the core infrastructure of many Osmocom Open Source Mobile Communications projects.
-long_description    ${description}
+long_description    {*}${description}
 
 categories          science comms
 license             GPL-2+
@@ -23,6 +23,8 @@ if {${subport} eq ${name}} {
 
     # release
     github.setup osmocom libosmocore 1.3.0
+    # Change github.tarball_from to 'releases' or 'archive' next update
+    github.tarball_from tarball
     checksums rmd160 b225cad23edc006bf26c7d1680aba034dad1cf6a \
               sha256 cc36bfff7ca362b72dc2977e89493cd63597e70e8f999adeaa4de8203d41a9fb \
               size   1287754
@@ -48,6 +50,8 @@ if {${subport} eq ${name}} {
 
     # devel
     github.setup osmocom libosmocore 89c04288252f1a50bbba5680c2f884a95f0eba2d
+    # Change github.tarball_from to 'releases' or 'archive' next update
+    github.tarball_from tarball
     version   20200121-[string range ${github.version} 0 7]
     checksums rmd160 4ef1a67ed3b1ac9004bdbb7e174128a936f6bc4f \
               sha256 9e0d56a53f931c491fb802c3f3d835d43f71bcafac0afe94b5da9f6ed22ac71d \
diff --git a/science/perseus-sdr/Portfile b/science/perseus-sdr/Portfile
index 7bbb86aa4ce..05649e6c95f 100644
--- a/science/perseus-sdr/Portfile
+++ b/science/perseus-sdr/Portfile
@@ -10,10 +10,12 @@ maintainers         {ra1nb0w @ra1nb0w} openmaintainer
 
 name                perseus-sdr
 description         Perseus Software Defined Radio Control Library
-long_description    ${description}
+long_description    {*}${description}
 homepage            http://microtelecom.it/perseus/
 
 github.setup        Microtelecom libperseus-sdr 0.8.2 v
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 distname            libperseus_sdr-${version}
 checksums           rmd160  8f5500d0db4dfa523cb58d3a0f1b3cf4a496953e \
                     sha256  7e7360be8e6760b3a332c6db5f09c30df6bfd7d32355163d90ae198a90b82f21 \
diff --git a/science/pihpsdr/Portfile b/science/pihpsdr/Portfile
index 2046c144a33..0afe88b95dc 100644
--- a/science/pihpsdr/Portfile
+++ b/science/pihpsdr/Portfile
@@ -14,9 +14,11 @@ platforms           darwin macosx
 license             GPL-3
 maintainers         {ra1nb0w @ra1nb0w} openmaintainer
 description         piHPSDR is an HPSDR application designed for low power boards, like Raspberry.
-long_description    ${description}
+long_description    {*}${description}
 
 github.setup        dl1ycf pihpsdr a5992fe8f83669561eb162d018c41787c360d341
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 version             20230516-[string range ${github.version} 0 7]
 checksums           rmd160  ced4a947f136996cf61d780519b84b3c348a5bf5 \
                     sha256  f3f6c41d97ebc6e7918e82c9261fc3e2540e49dcb3b8aea95a1870298bc6af7d \
diff --git a/science/plumed/Portfile b/science/plumed/Portfile
index fe9349e9649..2da54a515bc 100644
--- a/science/plumed/Portfile
+++ b/science/plumed/Portfile
@@ -7,6 +7,8 @@ PortGroup           linear_algebra 1.0
 PortGroup           debug 1.0
 
 github.setup        plumed plumed2 2.9.0 v
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 name                plumed
 revision            1
 
@@ -22,8 +24,6 @@ long_description    PLUMED is a plugin for molecular dynamics that can be used \
                     in combination with popular molecular dynamics codes to perform biased simulations. \
                     Additionally, it can be used as a standalone tool to analyze trajectories.
 
-platforms           darwin
-
 homepage            http://www.plumed.org/
 
 checksums           rmd160  af05bf43a7df583cf21c7cb2374cceea7dfe4066 \
@@ -113,10 +113,12 @@ pre-configure {
 # This subport installs the developer version
 subport plumed-devel {
     github.setup        plumed plumed2 b10067f646c3a957618fd0dfcc3bc0a74c9d45c6
+    # Change github.tarball_from to 'releases' or 'archive' next update
+    github.tarball_from tarball
     version             2.10-20230525
     revision            0
-    description         ${description} (development version)
-    long_description    ${long_description} (development version)
+    description         {*}${description} (development version)
+    long_description    {*}${long_description} (development version)
     conflicts plumed
     checksums           rmd160  bc4ef71db62a35b276b2d2fc2aaec03184d825e2 \
                         sha256  df9731de2f755367ebe94cf6f240c940a9a885cd1427734e342b0ca9e635d777 \
diff --git a/science/pybombs/Portfile b/science/pybombs/Portfile
index 9df7b932564..ba5bc2bda75 100644
--- a/science/pybombs/Portfile
+++ b/science/pybombs/Portfile
@@ -24,6 +24,8 @@ subport ${name}-devel {}
 if {${subport} eq ${name}} {
 
     github.setup    pybombs pybombs 2.3.5 v
+    # Change github.tarball_from to 'releases' or 'archive' next update
+    github.tarball_from tarball
     checksums       rmd160  52c72515bd0826d6a3f1c7d4309d8fc047b1adad \
                     sha256  96ecf3607f5e952f7df3808a4501a946eba34e42c23577e8caf820d8f98ba4f3 \
                     size    102864
@@ -40,6 +42,8 @@ if {${subport} eq ${name}} {
 } else {
 
     github.setup    pybombs pybombs 81f70b7a1b95005f0b0ba9ab1c897d3d160858f0
+    # Change github.tarball_from to 'releases' or 'archive' next update
+    github.tarball_from tarball
     version         20211001-[string range ${github.version} 0 7]
     checksums       rmd160  6d9b4499b5fcb53b47c0ae82b1d4dfd877ed6d70 \
                     sha256  2d51429d1a7c707630aa6a95022b9a6b48917dae368c12ea6a6f0a88f7314ead \
diff --git a/science/pymol/Portfile b/science/pymol/Portfile
index 39f5250ca70..8028a4e76c2 100644
--- a/science/pymol/Portfile
+++ b/science/pymol/Portfile
@@ -6,6 +6,8 @@ PortGroup           github 1.0
 PortGroup           boost 1.0
 
 github.setup        schrodinger pymol-open-source 3.0.0 v
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 name                pymol
 revision            1
 conflicts           pymol-devel
@@ -28,6 +30,8 @@ checksums           rmd160  d963b8704371db01d78cf75708b29f8f1c27829a \
 
 subport pymol-devel {
     github.setup    schrodinger pymol-open-source 9d3061ca58d8b69d7dad74a6
+    # Change github.tarball_from to 'releases' or 'archive' next update
+    github.tarball_from tarball
     version         20240905-[string range ${github.version} 0 7]
     conflicts       pymol
     revision        1
diff --git a/science/qdmr/Portfile b/science/qdmr/Portfile
index 7e8a58d3912..a2860e9293a 100644
--- a/science/qdmr/Portfile
+++ b/science/qdmr/Portfile
@@ -16,7 +16,7 @@ license             GPL-3
 platforms           darwin macosx
 
 description         qDMR is a codeplug programming software (CPS) for cheap DMR radios.
-long_description    ${description}: \
+long_description    {*}${description}: \
         qDMR is a feature-rich codeplug programming tool for cheap DMR radios.\
         Currently supported radios are: Radioddity/Baofen RD-5R, TyT MD-UV390, \
         Retevis RT3S, OpenGD77 firmware (GD77,RD-5R,DM-1801), Anytone AT-D878UV, \
@@ -25,6 +25,8 @@ long_description    ${description}: \
 homepage            https://dm3mat.darc.de/qdmr/
 
 github.setup        hmatuschek qdmr ${version} v
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 
 checksums           rmd160  b7c20e8a017907d09708fc76e0f185158f0e4f2c \
                     sha256  3f90d618a98d1a641b663804ddea1a7fa5f8fd45383b10c9321020eb16528309 \
diff --git a/science/qucs/Portfile b/science/qucs/Portfile
index a1939cf1172..115ba8d9794 100644
--- a/science/qucs/Portfile
+++ b/science/qucs/Portfile
@@ -8,7 +8,6 @@ name                qucs
 categories          science electronics
 license             GPL-2+
 maintainers         {mark @markemer} openmaintainer
-platforms           darwin
 
 description         an integrated circuit simulator
 long_description    Qucs is an integrated circuit simulator. \
@@ -17,6 +16,8 @@ long_description    Qucs is an integrated circuit simulator. \
 homepage            http://qucs.sourceforge.net/
 
 github.setup        Qucs qucs 0.0.20-rc2
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 checksums           rmd160  3374cf6f2a90d084c23f670a4193a11d42c1c842 \
                     sha256  66cfa0b9f8baa8468feb81b3a15f165e1946511893fa9cfee7009167daa04d19 \
                     size    20643591
diff --git a/science/relax3d/Portfile b/science/relax3d/Portfile
index eebac86bdae..0c6e91618b2 100644
--- a/science/relax3d/Portfile
+++ b/science/relax3d/Portfile
@@ -6,6 +6,8 @@ PortGroup           github 1.0
 PortGroup           waf 1.0
 
 github.setup        geodynamics relax 1.0.7
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 revision            0
 checksums           rmd160  168414b2c8ebf9a55ad071daa7b6a9979476a7ea \
                     sha256  72606dee72f4284b94348e8d12fbf1ccf55122e1eeecd3e4305f623519829ae9 \
@@ -13,7 +15,6 @@ checksums           rmd160  168414b2c8ebf9a55ad071daa7b6a9979476a7ea \
 
 name                relax3d
 categories          science gis
-platforms           darwin
 maintainers         nomaintainer
 license             GPL-3+
 
diff --git a/science/root5/Portfile b/science/root5/Portfile
index cf976952090..d09ed1237b2 100644
--- a/science/root5/Portfile
+++ b/science/root5/Portfile
@@ -9,6 +9,8 @@ PortGroup           github 1.0
 
 #github.setup       root-mirror root 5-34-36 v
 github.setup        root-mirror root c06fdea
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 version             5.34.37
 revision            11
 
@@ -31,7 +33,6 @@ long_description    The ROOT system provides a set of frameworks with all \
                     of data in a very efficient way.
 
 homepage            https://root.cern.ch/
-platforms           darwin
 
 dist_subdir         root
 
diff --git a/science/root6/Portfile b/science/root6/Portfile
index 54324741877..a775de75bf4 100644
--- a/science/root6/Portfile
+++ b/science/root6/Portfile
@@ -13,6 +13,8 @@ PortGroup           openssl                       1.0
 
 # Please also check if Gate needs a revbump after root6 update
 github.setup        root-project root 6-34-02 v
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 version             [string map {- .} ${github.version}]
 revision            0
 livecheck.version   ${github.version}
diff --git a/science/rsp_tcp/Portfile b/science/rsp_tcp/Portfile
index 6af45a7b7aa..01d3534dcf6 100644
--- a/science/rsp_tcp/Portfile
+++ b/science/rsp_tcp/Portfile
@@ -11,13 +11,15 @@ license             GPL-3
 maintainers         {ra1nb0w @ra1nb0w} {michaelld @michaelld} openmaintainer
 
 description         RSP TCP Server for SDRPlay devices.
-long_description    ${description} This is a fork of the original \
+long_description    {*}${description} This is a fork of the original \
     rsp_tcp by F4FHH Nicolas with extensions to support all current \
     RSP devices. Use the extended mode to access the full bit rate \
     of the RSP and all of the RSP specific controls. By default the \
     server supports the RTL TCP protocol.
 
 github.setup        SDRplay RSPTCPServer 0.1-beta v
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 checksums           rmd160  b21b417f636808d801e6b1f8fde926b0328e54e3 \
                     sha256  be6f925627b25b5737353beee65ed9ed256fe25bb70a71130215ebe5a4a8fcc7 \
                     size    37983
diff --git a/science/rtl_433/Portfile b/science/rtl_433/Portfile
index 27cb954d9e3..6406678b0d2 100644
--- a/science/rtl_433/Portfile
+++ b/science/rtl_433/Portfile
@@ -6,11 +6,12 @@ PortGroup           github 1.0
 
 epoch               1
 github.setup        merbanan rtl_433 21.12
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 revision            0
 
 categories          science comms
 license             GPL-2
-platforms           darwin
 maintainers         {@ducksauz duksta.org:john} openmaintainer
 
 description         RTL-SDR 433.92 MHz generic data receiver
diff --git a/science/rx_tools/Portfile b/science/rx_tools/Portfile
index d593a69ff69..7a3c8d07470 100644
--- a/science/rx_tools/Portfile
+++ b/science/rx_tools/Portfile
@@ -11,9 +11,11 @@ maintainers         {ra1nb0w @ra1nb0w} openmaintainer
 
 description         rx_fm, rx_power, and rx_sdr tools for \
     receiving data from SDRs using SoapySDR
-long_description    ${description}
+long_description    {*}${description}
 
 github.setup        rxseger rx_tools 811b21c4c8a592515279bd19f7460c6e4ff0551c
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 version             20190421-[string range ${github.version} 0 7]
 checksums           rmd160  be7ce358427be88112ba8c7a6f976fef3f5782ac \
                     sha256  1c5037b7b204e184edb51151982cc1e4aab9293a6fff00445f37395f7b25586a \
diff --git a/science/samtools-0.1/Portfile b/science/samtools-0.1/Portfile
index 7576c108983..1c1b1ce3c1b 100644
--- a/science/samtools-0.1/Portfile
+++ b/science/samtools-0.1/Portfile
@@ -4,14 +4,15 @@ PortSystem              1.0
 PortGroup               github 1.0
 
 github.setup            samtools samtools 0.1.20
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from     tarball
 name                    samtools-0.1
 categories              science
-platforms               darwin
 maintainers             {mcalhoun @MarcusCalhoun-Lopez} openmaintainer
 license                 MIT
 
 description             compatibility version of Samtools
-long_description        ${description}
+long_description        {*}${description}
 
 checksums               rmd160  08e8bc2c21f6da50c22356d5cce07738d04a632e \
                         sha256  5fd7f8efad62bf73373c4634109e9570e6e2ddfbab5b885e4b636be4992ce2c5 \
diff --git a/science/serialDV/Portfile b/science/serialDV/Portfile
index 7fd65a66713..b1482e15c55 100644
--- a/science/serialDV/Portfile
+++ b/science/serialDV/Portfile
@@ -10,9 +10,11 @@ license               GPL-3
 maintainers           {ra1nb0w @ra1nb0w} openmaintainer
 description           C++ Minimal interface to encode and decode audio with AMBE3000 \
     based devices in packet mode over a serial link.
-long_description      ${description}
+long_description      {*}${description}
 
 github.setup          f4exb serialDV 1.1.4 v
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from   tarball
 checksums             rmd160  30fcb2b18a28565772435b5e4c048dd13cee4a88 \
                       sha256  b13851a1ef743cf683f80ecb788cc3050fdc01307e52b0656a2d788d92bf5ee1 \
                       size    297844
diff --git a/science/sgp4/Portfile b/science/sgp4/Portfile
index 0fa2215d733..499fc5fd371 100644
--- a/science/sgp4/Portfile
+++ b/science/sgp4/Portfile
@@ -8,9 +8,11 @@ categories          science
 license             apache-2
 maintainers         {ra1nb0w @ra1nb0w} openmaintainer
 description         Simplified perturbations models
-long_description    ${description}
+long_description    {*}${description}
 
 github.setup        dnwrnr sgp4 6a448b4850e5fbf8c1ca03bb5f6013a9fdc1fd91
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 version             20221113-[string range ${github.version} 0 7]
 checksums           rmd160  86d0a7012ab9bc674dc6ed3aa8d9938391aeedcf \
                     sha256  f5344d4ee917492f4aa7144034a4353dfe7e3132ca495686056a30c30d00434a \
diff --git a/science/socnetv/Portfile b/science/socnetv/Portfile
index 099befcd6fa..6ba3f3f1db7 100644
--- a/science/socnetv/Portfile
+++ b/science/socnetv/Portfile
@@ -6,6 +6,8 @@ PortGroup           qt6 1.0
 
 name                socnetv
 github.setup        socnetv app 3.1 v
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 revision            0
 
 categories          science
diff --git a/science/source-extractor/Portfile b/science/source-extractor/Portfile
index cbb26c0e386..5da8b7e6feb 100644
--- a/science/source-extractor/Portfile
+++ b/science/source-extractor/Portfile
@@ -4,6 +4,8 @@ PortSystem          1.0
 PortGroup           github 1.0
 
 github.setup        astromatic sextractor 2.28.0
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 name                source-extractor
 categories          science
 maintainers         {aronnax @lpsinger} openmaintainer
diff --git a/science/spglib/Portfile b/science/spglib/Portfile
index cd3b706bc0a..f4020c12a52 100644
--- a/science/spglib/Portfile
+++ b/science/spglib/Portfile
@@ -6,6 +6,8 @@ PortGroup           github 1.0
 
 name                spglib
 github.setup        spglib spglib 2.5.0 v
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 revision            0
 
 categories          science
@@ -13,7 +15,7 @@ maintainers         {nist.gov:joe.fowler @joefowler} openmaintainer
 license             BSD
 
 description         C library for finding and handling crystal symmetries.
-long_description    ${description} There are python, fortran, rust, and \
+long_description    {*}${description} There are python, fortran, rust, and \
     ruby interfaces. See port py-spglib.
 
 homepage            https://spglib.github.io/spglib/
diff --git a/science/stellarium-qt4/Portfile b/science/stellarium-qt4/Portfile
index 709e673edac..3162ead02e1 100644
--- a/science/stellarium-qt4/Portfile
+++ b/science/stellarium-qt4/Portfile
@@ -7,19 +7,20 @@ PortGroup           github 1.0
 
 conflicts           stellarium
 github.setup        Stellarium stellarium 75d3f92af766dbeb92a1d89ff682233bec66587b
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 
 name                stellarium-qt4
 version             0.12.11-20190501
 revision            1
 categories          science
-platforms           darwin
 license             GPL-2+
 maintainers         nomaintainer
 
 description         Stellarium is a free open source planetarium for your computer. \
                     This older version is the last version based on qt4 which may \
                     run, or run more efficiently, on older or less powerful systems.
-long_description    ${description} It has been updated with some fixes and features \
+long_description    {*}${description} It has been updated with some fixes and features \
                     found in later versions of Stellarium.
 
 homepage            http://stellarium.org/
diff --git a/science/tophat/Portfile b/science/tophat/Portfile
index 23d63ee4afd..c03053a12ea 100644
--- a/science/tophat/Portfile
+++ b/science/tophat/Portfile
@@ -5,15 +5,16 @@ PortGroup           github 1.0
 PortGroup           boost 1.0
 
 github.setup        infphilo tophat 2.1.2 v
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 revision            3
 categories          science biology
 license             Boost-1
-platforms           darwin
 maintainers         {mcalhoun @MarcusCalhoun-Lopez} openmaintainer
 
 description         a fast splice junction mapper for RNA-Seq reads
 
-long_description    TopHat is ${description}. It aligns RNA-Seq reads to \
+long_description    TopHat is {*}${description}. It aligns RNA-Seq reads to \
                     mammalian-sized genomes using the ultra high-throughput \
                     short read aligner Bowtie, and then analyzes the mapping \
                     results to identify splice junctions between exons.
diff --git a/science/uhd/Portfile b/science/uhd/Portfile
index 8fffbd6de07..3b4aaf73738 100644
--- a/science/uhd/Portfile
+++ b/science/uhd/Portfile
@@ -23,6 +23,8 @@ if {${subport} eq ${name}} {
 Provides the release version, which is typically updated every month or so.
 
     github.setup EttusResearch uhd 3.15.0.0 v
+    # Change github.tarball_from to 'releases' or 'archive' next update
+    github.tarball_from tarball
     checksums rmd160 ac9ef6473cd5b034650e3979236d2535f398dec2 \
               sha256 fe385e826b8fbf4e869b4b919b7b7b8f01fba283bc0b8ffb954947f819b9c07b \
               size   12896898
@@ -67,6 +69,8 @@ subport uhd-39lts {
     name         uhd-39lts
     conflicts    uhd uhd-devel
     github.setup EttusResearch uhd UHD-3.9.LTS
+    # Change github.tarball_from to 'releases' or 'archive' next update
+    github.tarball_from tarball
     version      3.9-LTS
     checksums    rmd160 0765543ffdc36df568012640422fda8c70809f62 \
                  sha256 a6b4055c5d2d007c978c6577d87151ce9d505d6f5c116f0d20f176497424147e \
@@ -120,6 +124,8 @@ subport uhd-devel {
                      on which is more advanced, and is typically updated every few days to week.
 
     github.setup    EttusResearch uhd 5fac246bc18ab04cb4870026a630e46d0fd87b17
+    # Change github.tarball_from to 'releases' or 'archive' next update
+    github.tarball_from tarball
     version         20230127-4.4.0.0-[string range ${github.version} 0 7]
     checksums       rmd160  8e99ae1688803e9be0df23d7f52356b0d00d8f31 \
                     sha256  2f34bfa88ee6f7f339d18f7ef0a8a3cc772472f18a36ead8a6e00347f3e9a62b \
diff --git a/science/verilator/Portfile b/science/verilator/Portfile
index 989964801c8..148e7e1ba59 100644
--- a/science/verilator/Portfile
+++ b/science/verilator/Portfile
@@ -4,6 +4,8 @@ PortSystem              1.0
 PortGroup               github 1.0
 
 github.setup            verilator verilator 5.028 v
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from     tarball
 revision                0
 categories              science electronics
 license                 {LGPL-3 Artistic-2}
diff --git a/science/volk-gnss-sdr/Portfile b/science/volk-gnss-sdr/Portfile
index e82dd8bab30..0447324fdae 100644
--- a/science/volk-gnss-sdr/Portfile
+++ b/science/volk-gnss-sdr/Portfile
@@ -12,7 +12,6 @@ maintainers         {michaelld @michaelld} {gmail.com:carles.fernandez @carlesfe
 description         Volk modules for GNSS-SDR
 categories          science
 license             GPL-3
-platforms           darwin
 
 dist_subdir         gnss-sdr
 
@@ -20,10 +19,12 @@ compiler.cxx_standard 2014
 
 if {${subport} eq "volk-gnss-sdr"} {
 
-    long_description    ${description}: \
+    long_description    {*}${description}: \
         This port is kept up with the VOLK-GNSS-SDR release, which is typically updated every few months.
 
     github.setup    gnss-sdr gnss-sdr 0.0.19 v
+    # Change github.tarball_from to 'releases' or 'archive' next update
+    github.tarball_from tarball
     revision        0
     checksums       rmd160  11daaaa2e4acbbcc837d8bd4f42546a6440675bc \
                     sha256  e1f555da5ed8d0e0002441b771993409af29ed897784a0ebc7ee8d6c74b0cb98 \
@@ -34,10 +35,12 @@ if {${subport} eq "volk-gnss-sdr"} {
 }
 
 subport volk-gnss-sdr-devel {
-    long_description    ${description}: \
+    long_description    {*}${description}: \
         This port is kept up with the VOLK-GNSS-SDR GIT next branch, which is typically updated daily to weekly. This version of VOLK-GNSS-SDR generally contains fixes and new features that will be incorporated in an upcoming release.
 
     github.setup    gnss-sdr gnss-sdr ec180d852574e10c621f9bf498d3ef70d26342ce
+    # Change github.tarball_from to 'releases' or 'archive' next update
+    github.tarball_from tarball
     version         20240126-[string range ${github.version} 0 7]
     checksums       rmd160  6171d3966487f1cdf78fcc18e9a3f33f7a6f87a4 \
                     sha256  6fbf9bfa1813a00daefdaa5a11b3f15f396af4c957b1792378e4f2a92952723a \
diff --git a/science/volk/Portfile b/science/volk/Portfile
index 2192f0f605a..78b642d66e9 100644
--- a/science/volk/Portfile
+++ b/science/volk/Portfile
@@ -25,6 +25,8 @@ license             GPL-3
 homepage            https://libvolk.org/
 
 github.setup gnuradio volk 2.5.0 v
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 revision            0
 
 epoch               2
diff --git a/science/wdsp/Portfile b/science/wdsp/Portfile
index 011e43aa72e..4ed8d7d46ee 100644
--- a/science/wdsp/Portfile
+++ b/science/wdsp/Portfile
@@ -10,10 +10,12 @@ platforms           darwin macosx
 license             GPL-2
 maintainers         {ra1nb0w @ra1nb0w} openmaintainer
 description         WDSP is a full-featured signal processing library for Software Defined Radio
-long_description    ${description}
+long_description    {*}${description}
 homepage            https://github.com/TAPR/OpenHPSDR-wdsp
 
 github.setup        dl1ycf wdsp 4c273de2980835f32176704bb1893bd6fafad2f8
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 version             20230508-[string range ${github.version} 0 7]
 checksums           rmd160  36b15e553e2d9572bde8978d19f28f5cd6217b65 \
                     sha256  84d86d5fe31a369b308eb6147fe8996ce7aecbc7db8609544c90a4f63b1e1f9e \
diff --git a/science/xastir/Portfile b/science/xastir/Portfile
index 15b320b015e..2089ee8a8b3 100644
--- a/science/xastir/Portfile
+++ b/science/xastir/Portfile
@@ -13,6 +13,8 @@ long_description    {*}${description}
 homepage            http://www.xastir.org/
 
 github.setup        Xastir Xastir 2.1.8 Release-
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 checksums           rmd160  8e32480f5bd43d262d3ca2153fb69c492273ad25 \
                     sha256  8b010e0ae665c1dd5f83c609940b6b8b56ad0f777bac0f637f599311111bf973 \
                     size    2222069
diff --git a/science/xpa/Portfile b/science/xpa/Portfile
index 50c97b5b0cf..919871b2331 100644
--- a/science/xpa/Portfile
+++ b/science/xpa/Portfile
@@ -4,8 +4,9 @@ PortSystem          1.0
 PortGroup           github 1.0
 
 github.setup        ericmandel xpa 2.1.19 v
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 categories          science
-platforms           darwin
 maintainers         nomaintainer
 license             LGPL-2.1
 
diff --git a/science/xraylib/Portfile b/science/xraylib/Portfile
index e08dc14035f..24415effe5e 100644
--- a/science/xraylib/Portfile
+++ b/science/xraylib/Portfile
@@ -6,6 +6,8 @@ PortGroup           github 1.0
 PortGroup           compilers 1.0
 
 github.setup        tschoonj xraylib 4.1.2 xraylib-
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 revision            0
 checksums           rmd160  1a4e41a8b0003d5cf15fb525e38a7ac795d7fe75 \
                     sha256  e1d5bfe894e20464cb884acfc884281ce8e020dcae36e6bc02079618fbf228c3 \
diff --git a/science/xrmc/Portfile b/science/xrmc/Portfile
index d6f841d4e9a..1b48e9bbab7 100644
--- a/science/xrmc/Portfile
+++ b/science/xrmc/Portfile
@@ -5,6 +5,8 @@ PortGroup           github 1.0
 PortGroup           compilers 1.0
 
 github.setup        golosio xrmc 6.7.0
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 revision            0
 checksums           rmd160  bd85bc8b346489a7554d4ddee5ce2273d1f61225 \
                     sha256  03d4cbcb33c7fb59bd9397ad58524687ef7b05bd62dd67fc0b36497ba47d8ccf \
diff --git a/science/xrootd/Portfile b/science/xrootd/Portfile
index fea887c7dfc..87eb9ee2382 100644
--- a/science/xrootd/Portfile
+++ b/science/xrootd/Portfile
@@ -7,6 +7,8 @@ PortGroup           github                       1.0
 PortGroup           legacysupport                1.1
 
 github.setup        xrootd xrootd 5.7.2 v
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 revision            0
 
 checksums           rmd160  8f1a1e0fda88139d52fb4d2bb64995d0b55eff10 \
diff --git a/science/yorick-av/Portfile b/science/yorick-av/Portfile
index 2404250f61a..34b4e18c6e4 100644
--- a/science/yorick-av/Portfile
+++ b/science/yorick-av/Portfile
@@ -5,9 +5,10 @@ PortGroup           github 1.0
 
 set uname           av
 github.setup        paumard yorick-${uname} 0.0.5 v
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 categories          science multimedia yorick
 license             MIT
-platforms           darwin
 maintainers         {thibaut @paumard} openmaintainer
 
 description         Write movies to various formats from within Yorick
diff --git a/science/yorick-cubeview/Portfile b/science/yorick-cubeview/Portfile
index bfed014b834..ab331f85ec9 100644
--- a/science/yorick-cubeview/Portfile
+++ b/science/yorick-cubeview/Portfile
@@ -5,6 +5,8 @@ PortGroup           github 1.0
 
 set uname           cubeview
 github.setup        paumard yorick-${uname} 2.2 cv_
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 categories          science yorick
 platforms           any
 maintainers         {thibaut @paumard} openmaintainer
diff --git a/science/yorick-gl/Portfile b/science/yorick-gl/Portfile
index 776f3c6be95..98c408819e1 100644
--- a/science/yorick-gl/Portfile
+++ b/science/yorick-gl/Portfile
@@ -5,12 +5,13 @@ PortGroup           github 1.0
 
 set udate           20120925
 github.setup        dhmunro yorick-gl 1.1.0.git${udate} gl_
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 fetch.type          git
 git.branch          03b553ac53ff6b4cc377faea6af1bcd9a2c6648f
 
 license             BSD
 categories          science yorick
-platforms           darwin
 maintainers         {thibaut @paumard} openmaintainer
 description         OpenGL 3D graphics support for the Yorick language
 long_description    This is a compiled add-on for yorick (an interpreted \
diff --git a/science/yorick-gy/Portfile b/science/yorick-gy/Portfile
index c9bed6188b9..6c509e1cd6c 100644
--- a/science/yorick-gy/Portfile
+++ b/science/yorick-gy/Portfile
@@ -6,9 +6,10 @@ PortGroup           active_variants 1.1
 
 set uname           gy
 github.setup        paumard yorick-${uname} 0.0.5 v
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 categories          science yorick
 license             GPL-3
-platforms           darwin
 maintainers         {thibaut @paumard} openmaintainer
 
 description         GObject Introspection and Gtk bindings for Yorick
diff --git a/science/yorick-hdf5/Portfile b/science/yorick-hdf5/Portfile
index bdd02c8950b..cbb705b037c 100644
--- a/science/yorick-hdf5/Portfile
+++ b/science/yorick-hdf5/Portfile
@@ -5,10 +5,11 @@ PortGroup           github 1.0
 
 set uname           hdf5
 github.setup        frigaut yorick-${uname} 0.8.0
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 revision            14
 license             GPL-2+
 categories          science yorick
-platforms           darwin
 maintainers         {thibaut @paumard} openmaintainer
 description         Hierarchical Data Format 5 interface for Yorick
 long_description    HDF5 is the yorick interface plugin to the NCSA \
diff --git a/science/yorick-imutil/Portfile b/science/yorick-imutil/Portfile
index ac70e84c75c..2fc5b7e0dc3 100644
--- a/science/yorick-imutil/Portfile
+++ b/science/yorick-imutil/Portfile
@@ -4,10 +4,11 @@ PortSystem          1.0
 PortGroup           github 1.0
 
 set uname           imutil
-github.setup        frigaut yorick-${uname} 0.5.7 
+github.setup        frigaut yorick-${uname} 0.5.7
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 categories          science yorick
 license             GPL-2+
-platforms           darwin
 maintainers         {thibaut @paumard} openmaintainer
 description         Fast image manipulation routines for the Yorick language
 long_description    Compiled routines for basic but fast image manipulation in \
diff --git a/science/yorick-ml4/Portfile b/science/yorick-ml4/Portfile
index ec0f889766b..c75dc21854d 100644
--- a/science/yorick-ml4/Portfile
+++ b/science/yorick-ml4/Portfile
@@ -5,9 +5,10 @@ PortGroup           github 1.0
 
 set uname           ml4
 github.setup        frigaut yorick-${uname} 0.6.0
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 license             GPL-2+
 categories          science yorick
-platforms           darwin
 maintainers         {thibaut @paumard} openmaintainer
 description         Matlab 4 file format support fo Yorick
 long_description    This plug-in gives read/write access to files saved in the \
diff --git a/science/yorick-mpeg/Portfile b/science/yorick-mpeg/Portfile
index e8afd0e7136..9e655045bb3 100644
--- a/science/yorick-mpeg/Portfile
+++ b/science/yorick-mpeg/Portfile
@@ -5,9 +5,10 @@ PortGroup           github 1.0
 
 set uname           mpeg
 github.setup        dhmunro yorick-${uname} CVS-final
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 version             0.1
 categories          science multimedia yorick
-platforms           darwin
 maintainers         {thibaut @paumard} openmaintainer
 description         Write MPEG-1 movies from Yorick
 long_description    This is a standalone mpeg movie encoder for Yorick. \
diff --git a/science/yorick-soy/Portfile b/science/yorick-soy/Portfile
index 2f561ed5c71..72fbfa576ae 100644
--- a/science/yorick-soy/Portfile
+++ b/science/yorick-soy/Portfile
@@ -5,9 +5,10 @@ PortGroup           github 1.0
 
 set uname           soy
 github.setup        frigaut yorick-${uname} 1.4.0
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 license             GPL-2+
 categories          science yorick
-platforms           darwin
 maintainers         {thibaut @paumard} openmaintainer
 description         Sparse matrix operations for the Yorick language
 long_description    Sparse Operations with Yorick is a plugin for Yorick (an \
diff --git a/science/yorick-spydr/Portfile b/science/yorick-spydr/Portfile
index 246127bd2b3..586a76da85c 100644
--- a/science/yorick-spydr/Portfile
+++ b/science/yorick-spydr/Portfile
@@ -5,6 +5,8 @@ PortGroup           github 1.0
 
 set uname           spydr
 github.setup        frigaut yorick-${uname} 0.8.7 v
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 license             GPL-3+
 categories          science yorick
 platforms           any
diff --git a/science/yorick-yao/Portfile b/science/yorick-yao/Portfile
index 60d01bdb471..121c5cdf4ab 100644
--- a/science/yorick-yao/Portfile
+++ b/science/yorick-yao/Portfile
@@ -5,10 +5,11 @@ PortGroup           github 1.0
 
 set uname           yao
 github.setup        frigaut ${uname} 5.4.0 v
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 license             GPL-2+
 name                yorick-${uname}
 categories          science yorick
-platforms           darwin
 maintainers         {thibaut @paumard} openmaintainer
 description         A Yorick-based adaptive optics system simulator
 long_description    Yao is a monte-carlo simulation package for adaptive \
diff --git a/science/yorick-yutils/Portfile b/science/yorick-yutils/Portfile
index 728ce84c8c9..f917d7d097a 100644
--- a/science/yorick-yutils/Portfile
+++ b/science/yorick-yutils/Portfile
@@ -5,6 +5,8 @@ PortGroup           github 1.0
 
 set uname           yutils
 github.setup        frigaut yorick-${uname} 1.5.2
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 categories          science yorick
 license             GPL-2
 platforms           any
diff --git a/science/yorick-z/Portfile b/science/yorick-z/Portfile
index 80b8cc11bd5..ded7de2c56f 100644
--- a/science/yorick-z/Portfile
+++ b/science/yorick-z/Portfile
@@ -5,13 +5,14 @@ PortGroup           github 1.0
 
 set udate           20110402
 github.setup        dhmunro yorick-z 1.2.0.git${udate} z_
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 fetch.type          git
 git.branch          b5c6b217646704d82c86034ce648c4d7d408636c
 revision            4
 
 license             BSD
 categories          science yorick
-platforms           darwin
 maintainers         {thibaut @paumard} openmaintainer
 description         zlib, jpeg and png support for the Yorick language
 long_description    This is a compiled add-on for yorick (an interpreted \
diff --git a/science/yorick/Portfile b/science/yorick/Portfile
index d3ce945175f..e8a2d335764 100644
--- a/science/yorick/Portfile
+++ b/science/yorick/Portfile
@@ -4,6 +4,8 @@ PortSystem          1.0
 PortGroup           github 1.0
 
 github.setup        dhmunro yorick 2.2.04 y_
+# Change github.tarball_from to 'releases' or 'archive' next update
+github.tarball_from tarball
 revision            1
 github.version      [strsed ${version} {g/\./_/}]
 license             BSD