From 1e237142964793c9c3d55faaa3a8cdbe3315c855 Mon Sep 17 00:00:00 2001
From: Charles Duffy <charles@dyfis.net>
Date: Sat, 6 Oct 2018 13:26:35 -0500
Subject: [PATCH] gnupg1compat: reintroduce symlinks, only when actually needed

---
 pkgs/tools/security/gnupg/1compat.nix | 18 +++++++++++++-----
 1 file changed, 13 insertions(+), 5 deletions(-)

diff --git a/pkgs/tools/security/gnupg/1compat.nix b/pkgs/tools/security/gnupg/1compat.nix
index eadfbe230b3f..371a7ca67afd 100644
--- a/pkgs/tools/security/gnupg/1compat.nix
+++ b/pkgs/tools/security/gnupg/1compat.nix
@@ -4,14 +4,22 @@ stdenv.mkDerivation {
   name = "gnupg1compat-${gnupg.version}";
 
   builder = writeScript "gnupg1compat-builder" ''
+    PATH=${coreutils}/bin
     # First symlink all top-level dirs
-    ${coreutils}/bin/mkdir -p $out
-    ${coreutils}/bin/ln -s "${gnupg}/"* $out
+    mkdir -p $out
+    ln -s "${gnupg}/"* $out
 
     # Replace bin with directory and symlink it contents
-    ${coreutils}/bin/rm $out/bin
-    ${coreutils}/bin/mkdir -p $out/bin
-    ${coreutils}/bin/ln -s "${gnupg}/bin/"* $out/bin
+    rm $out/bin
+    mkdir -p $out/bin
+    ln -s "${gnupg}/bin/"* $out/bin
+
+    # Add symlinks for any executables that end in 2 and lack any non-*2 version
+    for f in $out/bin/*2; do
+      [[ -x $f ]] || continue # ignore failed globs and non-executable files
+      [[ -e ''${f%2} ]] && continue # ignore commands that already have non-*2 versions
+      ln -s -- "''${f##*/}" "''${f%2}"
+    done
   '';
 
   meta = gnupg.meta // {