From aee2750000526b0cdd658aadaf7d7500ff881ed3 Mon Sep 17 00:00:00 2001
From: Ben Sima <ben@bsima.me>
Date: Sun, 24 Feb 2019 12:36:27 -0800
Subject: Extract entrypoint to param

---
 pack/ibb.nix | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/pack/ibb.nix b/pack/ibb.nix
index 4224974..bd72310 100644
--- a/pack/ibb.nix
+++ b/pack/ibb.nix
@@ -10,6 +10,7 @@ let
     shakespeare
     text
   ]);
+  entrypoint = "Ibb";
 in
 stdenv.mkDerivation rec {
   name = "ibb";
@@ -20,7 +21,9 @@ stdenv.mkDerivation rec {
   ];
   strictDeps = true;
   buildPhase = ''
-    ${ghc}/bin/ghc -iapex -ilore -main-is Ibb --make apex/Ibb.hs -o bild/${name}
+    ${ghc}/bin/ghc -iapex -ilore \
+      -main-is ${entrypoint} --make apex/${entrypoint}.hs \
+      -o bild/${name}
   '';
   installPhase = ''
     mkdir -p $out/bin
-- 
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