Don't swallow namespace-parsing errors

Previously, if there was a problem with the inputs and bild failed to
determine the namespace, 'fromPath' would return 'Nothing' and then
'catMaybes' would drop the error-causing input altogether. In the one
time that I had a bad input, this made debugging incredibly difficult.
It's always a bad idea to swallow errors silently, so instead lets just
kill the program if we have bad inputs.

1 files changed, 12 insertions, 15 deletions

diff --git a/Biz/Bild.nix b/Biz/Bild.nix
index 1e4bcf8..9647983 100644
--- a/Biz/Bild.nix
+++ b/Biz/Bild.nix
@@ -59,18 +59,6 @@ in nixpkgs // { bild = rec {
     ;
   };
 
-  # this is needed to do builds without calling out to nix, remove this when I
-  # switch to all-nix builds
-  bildRuntimeDeps = with nixpkgs; [
-    pkg-config
-    # this is just to get access to ghc-pkg in bild
-    (haskell.ghcWith (_: []))
-
-    # lisp deps
-    guile
-    (lisp.sbclWith (p: with p; [asdf alexandria])) # just enough to build Example.lisp
-  ];
-
   # a standard nix build for bild, for bootstrapping. this should be the only
   # hand-written builder we need
   bild = nixpkgs.stdenv.mkDerivation {
@@ -78,7 +66,16 @@ in nixpkgs // { bild = rec {
     src = ../.;
     nativeBuildInputs = [ haskell.ghcPackageSetBild ];
     buildInputs = [ nixpkgs.makeWrapper ];
-    propagatedBuildInputs = bildRuntimeDeps;
+    propagatedBuildInputs = with nixpkgs; [
+      pkg-config
+      git
+      # this is just to get access to ghc-pkg in bild
+      (haskell.ghcWith (_: []))
+
+      # lisp deps, remove this when i implement nix builds for lisp
+      guile
+      (lisp.sbclWith (p: with p; [asdf alexandria])) # just enough to build Example.lisp
+    ];
     strictDeps = true;
     buildPhase = ''
       mkdir -p $out/bin $out/lib/ghc-${haskell.ghcPackageSetFull.version}
@@ -95,7 +92,7 @@ in nixpkgs // { bild = rec {
     '';
     installPhase = ''
       wrapProgram $out/bin/bild \
-        --prefix PATH : ${lib.makeBinPath [ haskell.ghcPackageSetBild ]} \
+        --prefix PATH : ${lib.makeBinPath [ haskell.ghcPackageSetBild pkgs.git ]} \
         --set GHC_PACKAGE_PATH \
         $out/lib/ghc-${haskell.ghcPackageSetFull.version}/package.conf.d
     '';
@@ -108,7 +105,7 @@ in nixpkgs // { bild = rec {
     USER = "nixbld";
     HOSTNAME = "nix-sandbox";
     # this is the default sandbox path where bild will be working:
-    CODEROOT = "/build/biz";
+    CODEROOT = "/build/omni";
     # we need to remove the $src root because bild expects paths relative to the
     # working directory:
     TARGET = "." + lib.strings.removePrefix (toString src) (toString target);