Unless I’m mistaken, this crate contains pre-built binaries that are installed as is:
--8<---------------cut here---------------start------------->8--- $ find $(guix build rust-winapi-i686-pc-windows-gnu) -name \*.a |head /gnu/store/fdklwnyb90qa6dzwyrr3jpd9q48nkq4s-rust-winapi-i686-pc-windows-gnu-0.4.0/share/cargo/src/winapi-i686-pc-windows-gnu-0.4.0/lib/libwinapi_onecore-api-ms-win-security-base-l1-2-2.a /gnu/store/fdklwnyb90qa6dzwyrr3jpd9q48nkq4s-rust-winapi-i686-pc-windows-gnu-0.4.0/share/cargo/src/winapi-i686-pc-windows-gnu-0.4.0/lib/libwinapi_cryptxml.a /gnu/store/fdklwnyb90qa6dzwyrr3jpd9q48nkq4s-rust-winapi-i686-pc-windows-gnu-0.4.0/share/cargo/src/winapi-i686-pc-windows-gnu-0.4.0/lib/libwinapi_windowsapp-api-ms-win-core-comm-l1-1-1.a /gnu/store/fdklwnyb90qa6dzwyrr3jpd9q48nkq4s-rust-winapi-i686-pc-windows-gnu-0.4.0/share/cargo/src/winapi-i686-pc-windows-gnu-0.4.0/lib/libwinapi_tdh.a /gnu/store/fdklwnyb90qa6dzwyrr3jpd9q48nkq4s-rust-winapi-i686-pc-windows-gnu-0.4.0/share/cargo/src/winapi-i686-pc-windows-gnu-0.4.0/lib/libwinapi_onecoreuap-api-ms-win-core-util-l1-1-0.a /gnu/store/fdklwnyb90qa6dzwyrr3jpd9q48nkq4s-rust-winapi-i686-pc-windows-gnu-0.4.0/share/cargo/src/winapi-i686-pc-windows-gnu-0.4.0/lib/libwinapi_onecoreuap-api-ms-win-core-namedpipe-ansi-l1-1-1.a /gnu/store/fdklwnyb90qa6dzwyrr3jpd9q48nkq4s-rust-winapi-i686-pc-windows-gnu-0.4.0/share/cargo/src/winapi-i686-pc-windows-gnu-0.4.0/lib/libwinapi_mincore-api-ms-win-core-datetime-l1-1-0.a /gnu/store/fdklwnyb90qa6dzwyrr3jpd9q48nkq4s-rust-winapi-i686-pc-windows-gnu-0.4.0/share/cargo/src/winapi-i686-pc-windows-gnu-0.4.0/lib/libwinapi_fwpuclnt.a /gnu/store/fdklwnyb90qa6dzwyrr3jpd9q48nkq4s-rust-winapi-i686-pc-windows-gnu-0.4.0/share/cargo/src/winapi-i686-pc-windows-gnu-0.4.0/lib/libwinapi_windowsapp-api-ms-win-core-synch-l1-2-0.a /gnu/store/fdklwnyb90qa6dzwyrr3jpd9q48nkq4s-rust-winapi-i686-pc-windows-gnu-0.4.0/share/cargo/src/winapi-i686-pc-windows-gnu-0.4.0/lib/libwinapi_windowsapp-api-ms-win-core-heap-obsolete-l1-1-0.a $ tar tzvf $(guix build rust-winapi-i686-pc-windows-gnu -S) |grep '\.a$' |head -rw-r--r-- 0/0 6530 2018-01-17 06:21 winapi-i686-pc-windows-gnu-0.4.0/lib/libwinapi_aclui.a -rw-r--r-- 0/0 23432 2018-01-17 06:21 winapi-i686-pc-windows-gnu-0.4.0/lib/libwinapi_activeds.a -rw-r--r-- 0/0 638848 2018-01-17 06:21 winapi-i686-pc-windows-gnu-0.4.0/lib/libwinapi_advapi32.a -rw-r--r-- 0/0 59044 2018-01-17 06:21 winapi-i686-pc-windows-gnu-0.4.0/lib/libwinapi_advpack.a -rw-r--r-- 0/0 8748 2018-01-17 06:21 winapi-i686-pc-windows-gnu-0.4.0/lib/libwinapi_amsi.a -rw-r--r-- 0/0 9332 2018-01-17 06:21 winapi-i686-pc-windows-gnu-0.4.0/lib/libwinapi_api-ms-win-net-isolation-l1-1-0.a -rw-r--r-- 0/0 2414 2018-01-17 06:21 winapi-i686-pc-windows-gnu-0.4.0/lib/libwinapi_apidll.a -rw-r--r-- 0/0 14600 2018-01-17 06:21 winapi-i686-pc-windows-gnu-0.4.0/lib/libwinapi_appmgmts.a -rw-r--r-- 0/0 3514 2018-01-17 06:21 winapi-i686-pc-windows-gnu-0.4.0/lib/libwinapi_appnotify.a -rw-r--r-- 0/0 2516 2018-01-17 06:21 winapi-i686-pc-windows-gnu-0.4.0/lib/libwinapi_asycfilt.a $ guix describe Generacio 189 Aug 30 2021 12:09:27 (nuna) guix f91ae94 repository URL: https://git.savannah.gnu.org/git/guix.git branch: master commit: f91ae9425bb385b60396a544afe27933896b8fa3 --8<---------------cut here---------------end--------------->8--- How can we address that? Are there other crates likely to have the same problem? (This package is a dependency of librsvg on ‘core-updates-frozen’.) Ludo’.