package with nix

nix/packages/by-name/easyscan/package.nix

@@ -1,10 +1,28 @@
 {
+  lib,
   haskellPackages,
   haskell,
+  symlinkJoin,
+  makeWrapper,
+  sane-backends, # scanimage
+  poppler-utils, # mergepdf
 }:
 let
   inherit (haskell.lib.compose) justStaticExecutables;
 
   drv = haskellPackages.callCabal2nix "easyscan" ./src { };
 in
-justStaticExecutables drv
+symlinkJoin {
+  name = "easyscan";
+  paths = [ (justStaticExecutables drv) ];
+  buildInputs = [ makeWrapper ];
+  postBuild = ''
+    wrapProgram $out/bin/easyscan \
+      --prefix PATH : "${
+        lib.makeBinPath [
+          sane-backends
+          poppler-utils
+        ]
+      }"
+  '';
+}

nix/packages/by-name/easyscan/src/easyscan.cabal

@@ -14,7 +14,7 @@ common common
   build-depends: base
   default-language: Haskell2010
 
-executable manage
+executable easyscan
   import: common
   main-is: ./Main.hs
   build-depends: