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/office/mendeley/update.nix

@@ -0,0 +1,61 @@
+{ writeScript, runtimeShell }:
+
+writeScript "update-mendeley" ''
+  #!${runtimeShell}
+  function follow() {
+    local URL=$1
+    while true; do
+      NEWURL=$(curl -m20 -sI "$URL" -o /dev/null -w '%{redirect_url}')
+      [ -z "$NEWURL" ] && break
+      [[ $NEWURL = $URL ]] && (echo "redirect loop?!"; exit 1)
+      echo "Following $URL -> $NEWURL ..." >&2
+      URL=$NEWURL
+    done
+
+    echo $URL
+  }
+
+  amd64URL=$(follow https://www.mendeley.com/repositories/ubuntu/stable/amd64/mendeleydesktop-latest)
+  amd64V=$(basename $amd64URL|grep -m1 -o "[0-9]\+\.[0-9]\+\(\.[0-9]\+\)\?")
+  i386URL=$(follow https://www.mendeley.com/repositories/ubuntu/stable/i386/mendeleydesktop-latest)
+  i386V=$(basename $i386URL|grep -m1 -o "[0-9]\+\.[0-9]\+\(\.[0-9]\+\)\?")
+
+  echo "amd64 version: $amd64V"
+  echo "i386 version:  $i386V"
+  if [[ $amd64V != $i386V ]]; then
+    echo "Versions not the same!"
+    exit 1
+  fi
+
+  if grep -q -F "$amd64V" ${./default.nix}; then
+    echo "No new version yet, nothing to do."
+    echo "Have a nice day!"
+    exit 0
+  fi
+
+  amd64OldHash=$(nix-instantiate --eval --strict -A "mendeley.src.drvAttrs.outputHash" --argstr system "x86_64-linux"| tr -d '"')
+  i386OldHash=$(nix-instantiate --eval --strict -A "mendeley.src.drvAttrs.outputHash" --argstr system "i686-linux"| tr -d '"')
+
+  echo "Prefetching amd64..."
+  amd64NewHash=$(nix-prefetch-url $amd64URL)
+  echo "Prefetching i386..."
+  i386NewHash=$(nix-prefetch-url $i386URL)
+
+  # Don't actually update, just report that an update is available
+  cat <<EOF
+
+
+  Time to update to $amd64V !
+
+  32bit (i386):
+    Old: $i386OldHash
+    New: $i386NewHash
+  64bit (amd64):
+    Old: $amd64OldHash
+    New: $amd64NewHash
+
+  Exiting so this information is seen...
+  (no update is actually performed here)
+  EOF
+  exit 1
+''