AI inspired fixes

pkgs/sops-install-secrets/default.nix

@@ -20,17 +20,17 @@ buildGo124Module {
   # requires root privileges for tests
   doCheck = false;
 
-  outputs = [ "out" ] ++ lib.lists.optionals (stdenv.isLinux) [ "unittest" ];
+  outputs = [ "out" ] ++ lib.optional stdenv.isLinux "unittest";
 
   postInstall =
     ''
       go test -c ./pkgs/sops-install-secrets
     ''
-    + lib.optionalString (stdenv.isLinux) ''
+    + lib.optionalString stdenv.isLinux ''
       # *.test is only tested on linux. $unittest does not exist on darwin.
       install -D ./sops-install-secrets.test $unittest/bin/sops-install-secrets.test
       # newer versions of nixpkgs no longer require this step
-      if command -v remove-references-to; then
+      if command -v remove-references-to >/dev/null; then
         remove-references-to -t ${go} $unittest/bin/sops-install-secrets.test
       fi
     '';