In reply to @dnrix:matrix.org
I want to build a package with the binary of one of my tests (using the go testing framework). I'm using buildGoModule for everything else so I'd like to use that too. I thought this would be easy but the best I could figure out was to use buildGoModule and then just override buildPhase = "go test -c -o mytest ./mytest"; (and then installPhase to copy it into $out). That works but I'm missing things like tags and other build flags. I can add those back but it's starting to feel a little wrong.. is there a better way to do this?

looked it up, we copy buildPhase and make the following two changes:

@@ -26,7 +26,7 @@
       fi
 
       local OUT
-      if ! OUT="$(go $cmd "''${flags[@]}" $dir 2>&1)"; then
+      if ! OUT="$(go $cmd -c -o $GOPATH/bin/ "''${flags[@]}" $dir 2>&1)"; then
         if ! echo "$OUT" | grep -qE '(no( buildable| non-test)?|build constraints exclude all) Go (source )?files'; then
           echo "$OUT" >&2
           return 1
@@ -62,5 +62,5 @@
     fi
     for pkg in $(getGoDirs ""); do
       echo "Building subPackage $pkg"
-      buildGoDir install "$pkg"
+      buildGoDir test "$pkg"
     done