Switch to buildFromSdist (#221)

CHANGELOG.md

@@ -5,6 +5,8 @@
 - #210: Add `extraLibraries` to `settings` module.
 - #215: Improved debug logging.
 - #216: Remove `debug` option (pass `--trace-verbose` to nix instead)
+- Breaking changes
+  - #221: Switch to `buildFromSdist`, to allow using non-standard package sets (wherein `cabal-install` is otherwise built without using user's overrides)
 
 ## 0.4.0 (Aug 22, 2023)
 

nix/build-haskell-package.nix

@@ -12,8 +12,10 @@
 }:
 
 let
-  fromSdist = self.buildFromCabalSdist or
-    (log.traceWarning "Your nixpkgs does not have hs.buildFromCabalSdist" (pkg: pkg));
+  # NOTE: We do not use the optimized version, `buildFromCabalSdist`, because it
+  # breaks in some cases. See https://github.com/srid/haskell-flake/pull/220
+  fromSdist = pkgs.haskell.lib.buildFromSdist or
+    (log.traceWarning "Your nixpkgs does not have hs.buildFromSdist" (pkg: pkg));
 
   mkNewStorePath = name: src:
     # Since 'src' may be a subdirectory of a store path