treewide: use $out instead of $bin with buildGoPackage

pkgs/applications/virtualization/singularity/default.nix

@@ -42,7 +42,7 @@ buildGoPackage rec {
     patchShebangs .
     sed -i 's|defaultPath := "[^"]*"|defaultPath := "${stdenv.lib.makeBinPath propagatedBuildInputs}"|' cmd/internal/cli/actions.go
 
-    ./mconfig -V ${version} -p $bin --localstatedir=/var
+    ./mconfig -V ${version} -p $out --localstatedir=/var
 
     # Don't install SUID binaries
     sed -i 's/-m 4755/-m 755/g' builddir/Makefile
@@ -54,16 +54,16 @@ buildGoPackage rec {
   '';
 
   installPhase = ''
-    make -C builddir install LOCALSTATEDIR=$bin/var
-    chmod 755 $bin/libexec/singularity/bin/starter-suid
-    wrapProgram $bin/bin/singularity --prefix PATH : ${stdenv.lib.makeBinPath propagatedBuildInputs}
+    make -C builddir install LOCALSTATEDIR=$out/var
+    chmod 755 $out/libexec/singularity/bin/starter-suid
+    wrapProgram $out/bin/singularity --prefix PATH : ${stdenv.lib.makeBinPath propagatedBuildInputs}
   '';
 
   postFixup = ''
-    find $bin/ -type f -executable -exec remove-references-to -t ${go} '{}' + || true
+    find $out/libexec/ -type f -executable -exec remove-references-to -t ${go} '{}' + || true
 
     # These etc scripts shouldn't have their paths patched
-    cp etc/actions/* $bin/etc/singularity/actions/
+    cp etc/actions/* $out/etc/singularity/actions/
   '';
 
   meta = with stdenv.lib; {