update gitignore

csabahruska · csabahruska · commit fe8cf3c51a75 · 2020-05-27T23:11:02.000+02:00
diff --git a/.gitignore b/.gitignore
@@ -55,6 +55,7 @@ _build
 */ghc-stage1
 .shake.*
 .hadrian_ghci
+hadrian/stack.yaml.lock
 
 # -----------------------------------------------------------------------------
 # Ignore any overlapped darcs repos and back up files
