uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/development/compilers/idris2/tests.nix

@@ -0,0 +1,68 @@
+{ stdenv, lib, pname, idris2, zsh }:
+
+let
+  testCompileAndRun = {testName, code, want, packages ? []}: let
+      packageString = builtins.concatStringsSep " " (map (p: "--package " + p) packages);
+    in stdenv.mkDerivation {
+      name = "${pname}-${testName}";
+      meta.timeout = 60;
+
+      # with idris2 compiled binaries assume zsh is available on darwin, but that
+      # is not the case with pure nix environments. Thus, we need to include zsh
+      # when we build for darwin in tests. While this is impure, this is also what
+      # we find in real darwin hosts.
+      nativeBuildInputs = lib.optional stdenv.isDarwin [ zsh ];
+
+      buildCommand = ''
+        set -eo pipefail
+
+        cat > packageTest.idr <<HERE
+        ${code}
+        HERE
+
+        ${idris2}/bin/idris2 ${packageString} -o packageTest packageTest.idr
+
+        GOT=$(./build/exec/packageTest)
+
+        if [ "$GOT" = "${want}" ]; then
+          echo "${testName} SUCCESS: '$GOT' = '${want}'"
+        else
+          >&2 echo "Got '$GOT', want: '${want}'"
+          exit 1
+        fi
+
+        touch $out
+      '';
+    };
+in {
+  # Simple hello world compiles, runs and outputs as expected
+  hello-world = testCompileAndRun {
+    testName = "hello-world";
+    code = ''
+      module Main
+
+      main : IO ()
+      main = putStrLn "Hello World!"
+    '';
+    want = "Hello World!";
+  };
+
+  # Data.Vect.Sort is available via --package contrib
+  use-contrib = testCompileAndRun {
+    testName = "use-contrib";
+    packages = [ "contrib" ];
+    code = ''
+      module Main
+
+      import Data.Vect
+      import Data.Vect.Sort  -- from contrib
+
+      vect : Vect 3 Int
+      vect = 3 :: 1 :: 5 :: Nil
+
+      main : IO ()
+      main = putStrLn $ show (sort vect)
+    '';
+    want = "[1, 3, 5]";
+  };
+}