From fe98fb31b5c9f800a20d5dfa26eb95cb1f6da62d Mon Sep 17 00:00:00 2001 From: Matthew Pickering <matthewtpickering@gmail.com> Date: Thu, 5 Nov 2020 17:23:35 +0000 Subject: [PATCH] Add note about deleting head.hackage index --- README.md | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/README.md b/README.md index b3764e16..5e705810 100644 --- a/README.md +++ b/README.md @@ -85,3 +85,9 @@ There are `hspec` tests, that can be run with `cabal`: ``` cabal new-build all && cabal new-test all ``` + +### Unexpected Build Failures + +If you encounter dependencies failing to build but there's a patch for +the library in head.hackage then you may need to delete `~/.cabal/packages/head.hackage.org` +so that the fresh patch is visible. This is probably a bug in cabal! -- GitLab