diff --git a/extra/gn/PKGBUILD b/extra/gn/PKGBUILD
index c5a28f77d..e564e857b 100644
--- a/extra/gn/PKGBUILD
+++ b/extra/gn/PKGBUILD
@@ -6,8 +6,8 @@
 buildarch=28
 
 pkgname=gn
-pkgver=0.1576.81ee1967
-_commit=81ee1967d3fcbc829bac1c005c3da59739c88df9
+pkgver=0.1634.ad9e442d
+_commit=ad9e442d92dcd9ee73a557428cfc336b55cbd533
 pkgrel=1
 pkgdesc="Meta-build system that generates build files for Ninja"
 arch=('x86_64')
@@ -33,13 +33,23 @@ prepare() {
 build() {
   cd $pkgname
   ./build/gen.py
-  ninja -C out gn
+  ninja -C out
+}
+
+check() {
+  cd $pkgname
+  ./out/gn_unittests
 }
 
 package() {
   cd $pkgname
   install -D out/gn "$pkgdir/usr/bin/gn"
-  install -Dm644 LICENSE "$pkgdir/usr/share/licenses/$pkgname/LICENSE"
+  install -Dm644 -t "$pkgdir/usr/share/doc/$pkgname" docs/*
+  install -Dm644 -t "$pkgdir/usr/share/licenses/$pkgname" LICENSE
+
+  mkdir -p "$pkgdir/usr/share/vim/vimfiles"
+  cp -r tools/gn/misc/vim/{autoload,ftdetect,ftplugin,syntax} \
+    "$pkgdir/usr/share/vim/vimfiles/"
 }
 
 # vim:set ts=2 sw=2 et:
diff --git a/extra/gn/chromium-gn-version.sh b/extra/gn/chromium-gn-version.sh
old mode 100644
new mode 100755
index 698eeda92..57d007ea7
--- a/extra/gn/chromium-gn-version.sh
+++ b/extra/gn/chromium-gn-version.sh
@@ -2,7 +2,7 @@
 
 set -eo pipefail
 
-chromium_version=$(curl -s https://omahaproxy.appspot.com/linux)
+chromium_version=${1:-$(curl -s https://omahaproxy.appspot.com/linux)}
 
-curl -s https://chromium.googlesource.com/chromium/src/+/refs/tags/$chromium_version/DEPS?format=TEXT |
+curl -s https://chromium.googlesource.com/chromium/src/+/$chromium_version/DEPS?format=TEXT |
 	base64 -d | grep -Po "'gn_version': 'git_revision:\K[^']*"