there seems to be a significant lack of documentation for cross-compiling for platform targets that are not the builder host using buildGoModule. i know that pkgsCross is probably the recommended approach, but there isn't a 1:1 mapping of supported cross-compilation targets in nixpkgs to golang's supported targets. assuming i want to build for every target that golang supports, does anybody have examples for how to cross-compile using buildGoModule, without assuming that pkgsCross can be used?

i should note that setting env.{GOOS, GOARCH} isn't sufficient, and this is the only other approach i've seen talked about on the forums.

there seems to be a significant lack of documentation for cross-compiling for platform targets that are not the builder host using buildGoModule. i know that pkgsCross is probably the recommended approach, but there isn't a 1:1 mapping of supported cross-compilation targets in nixpkgs to golang's supported targets. assuming i want to build for every target that golang supports, does anybody have examples for how to cross-compile using buildGoModule, without assuming that pkgsCross can be used?

i should note that setting env.{GOOS, GOARCH} isn't sufficient, and this is the only other approach i've seen talked about on the forums (from posts that are 3+ years old).

nixpkgs staging-next
❯ nix-build -A carapace
these 2 derivations will be built:
  /nix/store/xas6d0aw2x3vsmchldlhlg0s9hz2vfrg-carapace-1.5.7-go-modules.drv
  /nix/store/hglsssrqmdxfhbnpxgmg166w6vdb9whf-carapace-1.5.7.drv
building '/nix/store/xas6d0aw2x3vsmchldlhlg0s9hz2vfrg-carapace-1.5.7-go-modules.drv'...
Running phase: unpackPhase
unpacking source archive /nix/store/39b3cp4s5darpq60n4nspsiz02ldwcnw-source
source root is source
Running phase: patchPhase
Running phase: updateAutotoolsGnuConfigScriptsPhase
Running phase: configurePhase
Running phase: buildPhase
go: inconsistent vendoring in /build/source:
        github.com/carapace-sh/carapace@v1.10.3: is explicitly required in go.mod, but not marked as explicit in vendor/modules.txt
        github.com/carapace-sh/carapace-bridge@v1.4.10: is explicitly required in go.mod, but not marked as explicit in vendor/modules.txt
        github.com/carapace-sh/carapace-selfupdate@v0.0.10: is explicitly required in go.mod, but not marked as explicit in vendor/modules.txt
        github.com/carapace-sh/carapace-shlex@v1.1.1: is explicitly required in go.mod, but not marked as explicit in vendor/modules.txt
        github.com/carapace-sh/carapace-spec@v1.4.1: is explicitly required in go.mod, but not marked as explicit in vendor/modules.txt
        github.com/pelletier/go-toml@v1.9.5: is explicitly required in go.mod, but not marked as explicit in vendor/modules.txt
        github.com/spf13/cobra@v1.9.1: is explicitly required in go.mod, but not marked as explicit in vendor/modules.txt
        github.com/spf13/pflag@v1.0.9: is explicitly required in go.mod, but not marked as explicit in vendor/modules.txt
        golang.org/x/mod@v0.27.0: is explicitly required in go.mod, but not marked as explicit in vendor/modules.txt
        gopkg.in/ini.v1@v1.67.0: is explicitly required in go.mod, but not marked as explicit in vendor/modules.txt
        gopkg.in/yaml.v3@v3.0.1: is explicitly required in go.mod, but not marked as explicit in vendor/modules.txt
        github.com/inconshreveable/mousetrap@v1.1.0: is explicitly required in go.mod, but not marked as explicit in vendor/modules.txt
        github.com/kevinburke/ssh_config@v1.4.0: is explicitly required in go.mod, but not marked as explicit in vendor/modules.txt
        github.com/stretchr/testify@v1.8.1: is explicitly required in go.mod, but not marked as explicit in vendor/modules.txt
        github.com/spf13/pflag: is replaced in go.mod, but not marked as replaced in vendor/modules.txt
        github.com/kevinburke/ssh_config: is replaced in go.mod, but not marked as replaced in vendor/modules.txt

        To ignore the vendor directory, use -mod=readonly or -mod=mod.
        To sync the vendor directory, run:
                go mod vendor

i didn't have a lot of time to debug it, but will be re-tackling this in the coming days. from what i recall seeing, the buildGoModule was overwriting GOOS and GOARCH, and i couldn't set them using an override.

sorry this isn't too informative, i should have more info tomorrow :)

i didn't have a lot of time to debug it, but will be re-tackling this in the coming days. from what i recall seeing, buildGoModule was overwriting GOOS and GOARCH, and i couldn't set them using an override.

sorry this isn't too informative, i should have more info tomorrow :)