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/applications/science/math/sage/sage.nix

@@ -0,0 +1,62 @@
+{ lib, stdenv
+, makeWrapper
+, sage-tests
+, sage-with-env
+, jupyter-kernel-definition
+, jupyter-kernel-specs
+, sagedoc
+, withDoc
+, requireSageTests
+}:
+
+# A wrapper that makes sure sage finds its docs (if they were build) and the
+# jupyter kernel spec.
+
+stdenv.mkDerivation rec {
+  version = src.version;
+  pname = "sage";
+  src = sage-with-env.env.lib.src;
+
+  buildInputs = [
+    makeWrapper
+  ] ++ lib.optionals requireSageTests [
+    # This is a hack to make sure sage-tests is evaluated. It doesn't acutally
+    # produce anything of value, it just decouples the tests from the build.
+    sage-tests
+  ];
+
+  dontUnpack = true;
+  configurePhase = "#do nothing";
+  buildPhase = "#do nothing";
+
+  installPhase = ''
+    mkdir -p "$out/bin"
+    makeWrapper "${sage-with-env}/bin/sage" "$out/bin/sage" \
+      --set SAGE_DOC_SRC_OVERRIDE "${src}/src/doc" ${
+        lib.optionalString withDoc "--set SAGE_DOC_OVERRIDE ${sagedoc}/share/doc/sage"
+      } \
+      --prefix JUPYTER_PATH : "${jupyter-kernel-specs}"
+  '';
+
+  doInstallCheck = withDoc;
+  installCheckPhase = ''
+    export HOME="$TMPDIR/sage-home"
+    mkdir -p "$HOME"
+    "$out/bin/sage" -c 'browse_sage_doc._open("reference", testing=True)'
+  '';
+
+  passthru = {
+    tests = sage-tests;
+    quicktest = sage-tests.override { longTests = false; timeLimit = 600; }; # as many tests as possible in ~10m
+    doc = sagedoc;
+    lib = sage-with-env.env.lib;
+    kernelspec = jupyter-kernel-definition;
+  };
+
+  meta = with lib; {
+    description = "Open Source Mathematics Software, free alternative to Magma, Maple, Mathematica, and Matlab";
+    homepage = "https://www.sagemath.org";
+    license = licenses.gpl2Plus;
+    maintainers = teams.sage.members;
+  };
+}