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authorJonathan Ringer <jonringer117@gmail.com>2019-11-27 22:57:50 -0800
committerJonathan Ringer <jonringer117@gmail.com>2019-11-27 22:57:50 -0800
commit0c1c18ca4416baa46c940960aa5e619873a2318e (patch)
tree78d7fd3eb63e91fa99267e2d91a2a891ee29f567 /pkgs/applications/science/logic
parent4cc592761db580855b47fb84776e68b1d936521c (diff)
parentf4f816902112778172565baf91c2483186027c3b (diff)
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Merge branch 'master' into staging-next
Diffstat (limited to 'pkgs/applications/science/logic')
-rw-r--r--pkgs/applications/science/logic/coq/default.nix2
1 files changed, 1 insertions, 1 deletions
diff --git a/pkgs/applications/science/logic/coq/default.nix b/pkgs/applications/science/logic/coq/default.nix
index a463a2c5f3a2..bf2d0396f697 100644
--- a/pkgs/applications/science/logic/coq/default.nix
+++ b/pkgs/applications/science/logic/coq/default.nix
@@ -124,7 +124,7 @@ self = stdenv.mkDerivation {
   setupHook = writeText "setupHook.sh" ''
     addCoqPath () {
       if test -d "''$1/lib/coq/${coq-version}/user-contrib"; then
-        export COQPATH="''${COQPATH}''${COQPATH:+:}''$1/lib/coq/${coq-version}/user-contrib/"
+        export COQPATH="''${COQPATH-}''${COQPATH:+:}''$1/lib/coq/${coq-version}/user-contrib/"
       fi
     }