nix-helpers: f7826a0b8d0fe0d06c019da7f95dcd2b68caf590

     1: From: Chris Warburton
     2: Date: Wed, 25 Jul 2018 14:26:21 +0100
     3: State: resolved
     4: Subject: Make haskellPkgDeps more robust
     5: Message-Id: <fc4849f359673bce-0-artemis@nixos>
     6: resolution: fixed
     7: 
     8: We were using Cabal 1.x sandboxes, but they seem to crash with new
     9: Hackage indices (due to unexpected fields?).
    10: 
    11: We switched to using Cabal 2.x and new-freeze, but that doesn't seem to
    12: take dependencies of extra sources into account. For example, panhandle
    13: depends on lazysmallcheck2012 which isn't on Hackage; if we add it to
    14: a 'packages:' field of cabal.local.project, its dependencies don't seem
    15: to get frozen.
    16: 
    17: This should be reported upstream against Cabal, but first we should make
    18: a small example to test that it is indeed the case.