sourcehut: improve cross-compiling support

pkgs/applications/version-management/sourcehut/fix-gqlgen-trimpath.nix

@@ -15,12 +15,14 @@
   #   graph/generate.go:10: running "go": exit status 1
   proxyVendor = true;
 
+  nativeBuildInputs = [ unzip ];
+
   # Workaround -trimpath in the package derivation:
   # https://github.com/99designs/gqlgen/issues/1537
   # This is to give `go generate ./graph` access to gqlgen's *.gotpl files
   # If it fails, the gqlgenVersion may have to be updated.
   preBuild = let gqlgenVersion = "0.17.2"; in ''
-    ${unzip}/bin/unzip ''${GOPROXY#"file://"}/github.com/99designs/gqlgen/@v/v${gqlgenVersion}.zip
+    unzip ''${GOPROXY#"file://"}/github.com/99designs/gqlgen/@v/v${gqlgenVersion}.zip
     go generate ./loaders
     go generate ./graph
     rm -rf github.com