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/tools/misc/pandoc-acro/default.nix

@@ -0,0 +1,69 @@
+{ buildPythonApplication
+, fetchPypi
+, pandocfilters
+, panflute
+, lib
+, pandoc
+, pandoc-acro
+, texlive
+, runCommand
+}:
+
+let
+  pname = "pandoc-acro";
+  version = "0.10.1";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "sha256-JMfSQXX+BCGdFQYPFB+r08WRnhT3aXfnBNINROxCUA0=";
+  };
+in
+buildPythonApplication {
+  inherit pname version src;
+
+  propagatedBuildInputs = [
+    pandocfilters
+    panflute
+  ];
+
+  # Something in the tests does not typecheck, but the tool works well.
+  doCheck = false;
+
+  passthru.tests.example-doc =
+    let
+        env = {
+          nativeBuildInputs = [
+            pandoc
+            pandoc-acro
+            (texlive.combine {
+              inherit (texlive)
+                scheme-tetex
+                acro
+                translations
+                ;
+            })
+          ];
+        };
+      in
+      runCommand "pandoc-acro-example-docs" env ''
+        set -euo pipefail
+        exampleFile="${pname}-${version}/tests/example.md"
+        metadataFile="${pname}-${version}/tests/metadata.yaml"
+        tar --extract "--file=${src}" "$exampleFile" "$metadataFile"
+        mkdir $out
+
+        pandoc -F pandoc-acro "$exampleFile" "--metadata-file=$metadataFile" \
+          -T pdf -o $out/example.pdf
+        pandoc -F pandoc-acro  "$exampleFile" "--metadata-file=$metadataFile" \
+          -T txt -o $out/example.txt
+
+        ! grep -q "\+afaik" $out/example.txt
+      '';
+
+  meta = with lib; {
+    homepage = "https://pypi.org/project/pandoc-acro/";
+    description = "Pandoc filter which manages acronyms in Pandoc flavored Markdown sources";
+    license = licenses.bsd2;
+    maintainers = with maintainers; [ tfc ];
+  };
+}