Include pre-existing, libs, pkgconfig and frameworks for shell

Author: hamishmack

lib/default.nix

@@ -342,7 +342,7 @@ in {
   # Converts from a `compoent.depends` value to a library derivation.
   # In the case of sublibs the `depends` value should already be the derivation.
   dependToLib = d:
-    # Do simplify this to `d.components.library or d`, as that
+    # Do not simplify this to `d.components.library or d`, as that
     # will not give a good error message if the `.library`
     # is missing (happens if the package is unplanned,
     # but has overrides).

test/shell-for-setup-deps/default.nix

@@ -44,7 +44,8 @@ in recurseIntoAttrs ({
       cp ${./pkg/src}/*.hs .
 
       printf "checking that the shell env has the dependencies...\n" >& 2
-      ${env.ghc}/bin/${env.ghc.targetPrefix}ghc-pkg list
+      ${env.ghc}/bin/${env.ghc.targetPrefix}ghc-pkg list -v
+      ${env.ghc}/bin/${env.ghc.targetPrefix}ghc-pkg check
       ${env.ghc}/bin/${env.ghc.targetPrefix}runghc conduit-test.hs
 
       touch $out