diff --git a/pkgs/development/haskell-modules/configuration-hackage2nix/main.yaml b/pkgs/development/haskell-modules/configuration-hackage2nix/main.yaml
index f94393f7748c..c4676a5c3b68 100644
--- a/pkgs/development/haskell-modules/configuration-hackage2nix/main.yaml
+++ b/pkgs/development/haskell-modules/configuration-hackage2nix/main.yaml
@@ -77,10 +77,13 @@ default-package-overrides:
   - gi-javascriptcore < 4.0.23 #
   - gi-soup < 2.4.24 #
   - gi-webkit2 < 4.0.27 #
-  # 2021-05-11: the diagrams libraries still depends on pre 0.6,
-  # e. g. https://github.com/diagrams/diagrams-core/issues/115
-  # We can keep this pin presumably until base 4.15
+  # 2021-05-11: not all diagrams libraries have adjusted to
+  # monoid-extras 0.6 yet, keep them pinned to lower versions
+  # until we can do a full migration, see
+  # https://github.com/diagrams/diagrams-core/issues/115
+  # We can keep this pin at most until base 4.15
   - monoid-extras < 0.6
+  - diagrams-core < 1.5.0
   # 2021-05-11: Pin for hls 1.1.0
   - ghcide == 1.2.*
   - hls-plugin-api == 1.1.0.0
diff --git a/pkgs/development/haskell-modules/hackage-packages.nix b/pkgs/development/haskell-modules/hackage-packages.nix
index 43ebaad69789..faa5443afd4b 100644
--- a/pkgs/development/haskell-modules/hackage-packages.nix
+++ b/pkgs/development/haskell-modules/hackage-packages.nix
@@ -74169,6 +74169,25 @@ self: {
      }) {};
 
   "diagrams-core" = callPackage
+    ({ mkDerivation, adjunctions, base, containers, distributive
+     , dual-tree, lens, linear, monoid-extras, mtl, profunctors
+     , semigroups, unordered-containers
+     }:
+     mkDerivation {
+       pname = "diagrams-core";
+       version = "1.4.2";
+       sha256 = "0qgb43vy23g4fxh3nmxfq6jyp34imqvkhgflaa6rz0iq6d60gl43";
+       revision = "1";
+       editedCabalFile = "0w8mpy0z8kmx4l7cg8sgc1hyixysjfqffdgmnxy5p04airjlbpj7";
+       libraryHaskellDepends = [
+         adjunctions base containers distributive dual-tree lens linear
+         monoid-extras mtl profunctors semigroups unordered-containers
+       ];
+       description = "Core libraries for diagrams EDSL";
+       license = lib.licenses.bsd3;
+     }) {};
+
+  "diagrams-core_1_5_0" = callPackage
     ({ mkDerivation, adjunctions, base, containers, distributive
      , dual-tree, lens, linear, monoid-extras, mtl, profunctors
      , semigroups, unordered-containers
@@ -74183,6 +74202,7 @@ self: {
        ];
        description = "Core libraries for diagrams EDSL";
        license = lib.licenses.bsd3;
+       hydraPlatforms = lib.platforms.none;
      }) {};
 
   "diagrams-graphviz" = callPackage