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-rw-r--r--pkgs/tools/text/gnugrep/default.nix7
1 files changed, 6 insertions, 1 deletions
diff --git a/pkgs/tools/text/gnugrep/default.nix b/pkgs/tools/text/gnugrep/default.nix
index 3f5c4d7d86c..f7e3cd42a9b 100644
--- a/pkgs/tools/text/gnugrep/default.nix
+++ b/pkgs/tools/text/gnugrep/default.nix
@@ -1,5 +1,10 @@
 { stdenv, fetchurl, pcre, libiconv, perl }:
 
+# Note: this package is used for bootstrapping fetchurl, and thus
+# cannot use fetchpatch! All mutable patches (generated by GitHub or
+# cgit) that are needed here should be included directly in Nixpkgs as
+# files.
+
 let version = "3.4"; in
 
 stdenv.mkDerivation {
@@ -19,7 +24,7 @@ stdenv.mkDerivation {
 
   # cygwin: FAIL: multibyte-white-space
   # freebsd: FAIL mb-non-UTF8-performance
-  # all platforms: timing sensitivity in long-pattern-perf 
+  # all platforms: timing sensitivity in long-pattern-perf
   #doCheck = !stdenv.isDarwin && !stdenv.isSunOS && !stdenv.isCygwin && !stdenv.isFreeBSD;
   doCheck = false;