From 8aa44afb7e53a1fc5c9923a5ae5ab32bb7ee4b0f Mon Sep 17 00:00:00 2001
From: adisbladis <adisbladis@gmail.com>
Date: Tue, 14 Jun 2022 19:01:44 +0800
Subject: [PATCH] buildGoApplication: warn if buildFlags is used

This is a port of https://github.com/NixOS/nixpkgs/commit/cb7d80dcaf926a38e80044c29a8210e69f27bb80
---
 builder/default.nix | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/builder/default.nix b/builder/default.nix
index 7300482..657fd8f 100644
--- a/builder/default.nix
+++ b/builder/default.nix
@@ -181,6 +181,10 @@ let
     , meta ? { }
     , passthru ? { }
     , tags ? [ ]
+
+    # needed for buildFlags warning
+    , buildFlags ? ""
+
     , ...
     }@attrs:
     let
@@ -217,7 +221,9 @@ let
         inherit go modulesStruct localReplaceCommands defaultPackage;
       };
 
-      package = stdenv.mkDerivation (lib.optionalAttrs (defaultPackage != "")
+      package = lib.warnIf (buildFlags != "")
+      "Use the `ldflags` and/or `tags` attributes instead of `buildFlags`"
+        stdenv.mkDerivation (lib.optionalAttrs (defaultPackage != "")
         {
           pname = attrs.pname or baseNameOf defaultPackage;
           version = stripVersion (modulesStruct.mod.${defaultPackage}).version;