sqitch: fix on Darwin

Fixes #30389. (cherry picked from commit b5610ed)
NixOS · Oct 15, 2017 · 8d5f2ae · 8d5f2ae
1 parent 68ef4b1
commit 8d5f2ae
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/pkgs/development/tools/misc/sqitch/default.nix b/pkgs/development/tools/misc/sqitch/default.nix
@@ -11,7 +11,11 @@ stdenv.mkDerivation {
   installPhase = ''
     mkdir -p $out/bin
     for d in bin/sqitch etc lib share ; do
-      ln -s ${sqitchModule}/$d $out/$d
+      # make sure dest alreay exists before symlink
+      # this prevents installing a broken link into the path
+      if [ -e ${sqitchModule}/$d ]; then
+        ln -s ${sqitchModule}/$d $out/$d
+      fi
     done
   '';
   dontStrip = true;