haskellPackages.diagrams-lib: pin to < 1.4.4

While diagrams-lib 1.4.4 doesn't per se require us to update any
diagrams lib to 1.5.0 it would require monoid-extras 0.6 which would
force us to update diagrams-core to 1.5.0, thus breaking
haskellPackages.diagrams.

Since we can just keep the patch we fetch and downgrade to 1.4.3, we
can continue sitting out the slow update cycle of the diagrams universe.

1 files changed, 2 insertions, 0 deletions

diff --git a/pkgs/development/haskell-modules/configuration-common.nix b/pkgs/development/haskell-modules/configuration-common.nix
index d4a51216dc6..f0c275c32fc 100644
--- a/pkgs/development/haskell-modules/configuration-common.nix
+++ b/pkgs/development/haskell-modules/configuration-common.nix
@@ -715,6 +715,8 @@ self: super: {
   diagrams-svg = doJailbreak super.diagrams-svg;
   diagrams-contrib = doJailbreak super.diagrams-contrib;
   # Apply patch from master to add compat with optparse-applicative >= 0.16.
+  # We unfortunately can't upgrade to 1.4.4 which includes this patch yet
+  # since it would require monoid-extras 0.6 which breaks other diagrams libs.
   diagrams-lib = doJailbreak (appendPatch super.diagrams-lib
     (pkgs.fetchpatch {
       url = "https://github.com/diagrams/diagrams-lib/commit/4b9842c3e3d653be69af19778970337775e2404d.patch";