* update gn to 0.1891.dfcbc6fe-1

gn/PKGBUILD

@@ -2,8 +2,8 @@
 # Maintainer: Evangelos Foutras <evangelos@foutrelis.com>
 
 pkgname=gn
-pkgver=0.1877.595e3be7
-_commit=595e3be7c8381d4eeefce62a63ec12bae9ce5140
+pkgver=0.1891.dfcbc6fe
+_commit=dfcbc6fed0a8352696f92d67ccad54048ad182b3
 pkgrel=1
 pkgdesc="Meta-build system that generates build files for Ninja"
 arch=(x86_64 powerpc64le)

gn/chromium-gn-version.sh

@@ -2,7 +2,20 @@
 
 set -eo pipefail
 
-chromium_version=${1:-$(curl -s https://omahaproxy.appspot.com/linux)}
+readonly CURL='curl -s --compressed'
 
-curl -s https://chromium.googlesource.com/chromium/src/+/$chromium_version/DEPS?format=TEXT |
-	base64 -d | grep -Po "'gn_version': 'git_revision:\K[^']*"
+gn_revision_from_chrome_version() {
+  $CURL "https://chromium.googlesource.com/chromium/src/+/$1/DEPS?format=TEXT" \
+    | base64 -d | grep -Po "'gn_version': 'git_revision:\K[^']*"
+}
+
+{
+  echo channel version gn_revision
+  echo ------- ------- -----------
+  while read -r channel version; do
+    echo "$channel $version $(gn_revision_from_chrome_version "$version")"
+  done < <(
+    $CURL https://omahaproxy.appspot.com/json \
+      | jq -r '.[] | select ( .os == "linux" ) | .versions | .[] | "\(.channel) \(.version)"'
+  )
+} | column -t