slack: add auto-updater script

1 files changed, 41 insertions, 0 deletions

diff --git a/pkgs/applications/networking/instant-messengers/slack/update.sh b/pkgs/applications/networking/instant-messengers/slack/update.sh
new file mode 100755
index 0000000000000..adef444110919
--- /dev/null
+++ b/pkgs/applications/networking/instant-messengers/slack/update.sh
@@ -0,0 +1,41 @@
+#!/usr/bin/env nix-shell
+#! nix-shell -i bash -p curl gnused
+
+set -eou pipefail
+
+latest_linux_version=$(curl --silent https://slack.com/downloads/linux | sed -n 's/.*Version \([0-9\.]\+\).*/\1/p')
+latest_mac_version=$(curl --silent https://slack.com/downloads/mac | sed -n 's/.*Version \([0-9\.]\+\).*/\1/p')
+
+# Double check that the latest mac and linux versions are in sync.
+if [[ "$latest_linux_version" != "$latest_mac_version" ]]; then
+  echo "the latest linux ($latest_linux_version) and mac ($latest_mac_version) versions are not the same"
+  exit 1
+fi
+
+nixpkgs="$(git rev-parse --show-toplevel)"
+slack_nix="$nixpkgs/pkgs/applications/networking/instant-messengers/slack/default.nix"
+nixpkgs_linux_version=$(cat "$slack_nix" | sed -n 's/.*x86_64-linux-version = \"\([0-9\.]\+\)\";.*/\1/p')
+nixpkgs_mac_version=$(cat "$slack_nix" | sed -n 's/.*x86_64-darwin-version = \"\([0-9\.]\+\)\";.*/\1/p')
+
+if [[ "$nixpkgs_linux_version" == "$latest_linux_version" && "$nixpkgs_mac_version" == "$latest_mac_version" ]]; then
+  echo "nixpkgs versions are all up to date!"
+  exit 0
+fi
+
+linux_url="https://downloads.slack-edge.com/linux_releases/slack-desktop-${latest_linux_version}-amd64.deb"
+mac_url="https://downloads.slack-edge.com/releases/macos/${latest_mac_version}/prod/x64/Slack-${latest_mac_version}-macOS.dmg"
+linux_sha256=$(nix-prefetch-url ${linux_url})
+mac_sha256=$(nix-prefetch-url ${mac_url})
+
+sed -i "s/x86_64-linux-version = \".*\"/x86_64-linux-version = \"${latest_linux_version}\"/" "$slack_nix"
+sed -i "s/x86_64-darwin-version = \".*\"/x86_64-darwin-version = \"${latest_mac_version}\"/" "$slack_nix"
+sed -i "s/x86_64-linux-sha256 = \".*\"/x86_64-linux-sha256 = \"${linux_sha256}\"/" "$slack_nix"
+sed -i "s/x86_64-darwin-sha256 = \".*\"/x86_64-darwin-sha256 = \"${mac_sha256}\"/" "$slack_nix"
+
+if ! nix-build -A slack "$nixpkgs"; then
+  echo "The updated slack failed to build."
+  exit 1
+fi
+
+echo "Successfully updated"
+echo "slack: $nixpkgs_linux_version -> $latest_linux_version"