@@ -24,7 +24,11 @@ stdenv.mkDerivation rec {
2424 '';
2525
2626 NIX_LDFLAGS = "-lcrypt -lssl -lcrypto -lpam -lcap";
27− NIX_CFLAGS_COMPILE = "-Wno-error=enum-conversion";
27+
28+ # On gcc9, this would produce
29+ # error: '-Werror=enum-conversion': no option -Wenum-conversion
30+ NIX_CFLAGS_COMPILE = lib.optionalString (lib.versionAtLeast stdenv.cc.version "10")
31+ "-Wno-error=enum-conversion";
2832
2933 enableParallelBuilding = true;
3034