diff --git a/shell.nix b/shell.nix
index 287518c..29471af 100644
--- a/shell.nix
+++ b/shell.nix
@@ -2,32 +2,15 @@
 
 with pkgs;
 
-let
-  nimlibs = stdenv.mkDerivation {
-    pname = "nimlibs";
-    version = nim.version;
-    src = nim;
-    nativeBuildInputs = [ nim ];
-    buildPhase = ''
-      nim c -d:release --nimcache:$PWD -o:libnimrtl.so lib/nimrtl.nim
-      nim c -d:release --nimcache:$PWD -o:libnimhcr.so lib/nimhcr.nim
-    '';
-    installPhase = ''
-      install -Dm644 libnimrtl.so $out/lib/libnimrtl.so
-      install -Dm644 libnimhcr.so $out/lib/libnimhcr.so
-    '';
-  };
-
-in stdenv.mkDerivation {
-  pname = "oeffisearch";
-  version = "0.1.0";
+mkShell {
+  name = "oeffisearch-shell";
   nativeBuildInputs = [ nim ];
-  LD_LIBRARY_PATH = lib.makeLibraryPath [ openssl nim nimlibs ];
+  LD_LIBRARY_PATH = lib.makeLibraryPath [ openssl ];
   CACHE_PATH = toString ./cache;
   NIX_ENFORCE_PURITY = 0;
   shellHook = ''
-    #nimble run --hotcodereloading:on oeffisearch
-    nimble run oeffisearch
+    nim c src/oeffisearch.nim
+    ./src/oeffisearch
     exit
   '';
 }