User-defined GHC flags override the default ones.

When the same flag (eg. -vx) is instanciated several times with different values, GHC uses the outermost one.
tweag · Jan 22, 2019 · 7cf17f9 · 7cf17f9
1 parent 316f858
commit 7cf17f9
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/haskell/private/actions/compile.bzl b/haskell/private/actions/compile.bzl
@@ -197,7 +197,6 @@ def _compilation_defaults(hs, cc, java, dep_info, srcs, import_dir_map, extra_sr
     if hs.mode == "opt":
         args.add("-O2")
 
-    args.add(ghc_args)
     args.add(["-static"])
     if with_profiling:
         args.add("-prof", "-fexternal-interpreter")
@@ -230,6 +229,8 @@ def _compilation_defaults(hs, cc, java, dep_info, srcs, import_dir_map, extra_sr
             "p_o",
         ])
 
+    args.add(ghc_args)
+
     # Pass source files
     for f in set.to_list(source_files):
         args.add(f)