add isabat script

This just calls the isabelle2nix util and pipes its output directly into
bat, resulting in a somewhat usable cli tool for .thy files.

1 files changed, 22 insertions, 0 deletions

diff --git a/isabat.nix b/isabat.nix
new file mode 100644
index 0000000..7fc05f2
--- /dev/null
+++ b/isabat.nix
@@ -0,0 +1,22 @@
+let
+  sources = import ./nix/sources.nix;
+  pkgs = import sources.nixpkgs {};
+  isabelle-unicode = import ./default.nix;
+in
+
+with pkgs;
+stdenv.mkDerivation {
+  pname = "isabat";
+  version = "0.1";
+
+  src = ./isabat;
+
+  phases = [ "buildPhase" ];
+
+  buildPhase = ''
+    cp $src isabat
+    substituteInPlace isabat \
+      --replace isabelle2unicode "${isabelle-unicode}/bin/isabelle2unicode"
+    cp isabat $out
+  '';
+}