fix 8.x build

Author: pepeiborra

cabal.project

@@ -43,7 +43,14 @@ index-state: 2021-10-04T02:41:06Z
 constraints:
     hyphenation +embed
 
+source-repository-package
+  type:git
+  location: https://github.com/tvh/ekg-wai/
+  tag: ba56333e0959f896a03f15a9f151f4a31d1bfcca
+  -- https://github.com/tvh/ekg-wai/issues/4
+
 allow-newer:
+    ekg-wai:base,
     -- for shake-bench
     Chart-diagrams:diagrams-core,
     SVGFonts:diagrams-core