haskell generic builder: Add flag to allow inconsistent dependencies.

2018-12-15 13:31:08 -05:00
parent 562c620398
commit 30fb5b0dcf
2 changed files with 17 additions and 5 deletions
@@ -408,4 +408,11 @@ rec {
  */
  generateOptparseApplicativeCompletions = commands: pkg:
    pkgs.lib.foldr generateOptparseApplicativeCompletion pkg commands;
+
+  # Don't fail at configure time if there are multiple versions of the
+  # same package in the (recursive) dependencies of the package being
+  # built. Will delay failures, if any, to compile time.
+  allowInconsistentDependencies = drv: overrideCabal drv (drv: {
+    allowInconsistentDependencies = true;
+  });
 }