automate nixpkgs update

1 files changed, 9 insertions, 0 deletions

diff --git a/krebs/update-channel.sh b/krebs/update-channel.sh
new file mode 100755
index 00000000..47d3f29c
--- /dev/null
+++ b/krebs/update-channel.sh
@@ -0,0 +1,9 @@
+#!/bin/sh
+dir=$(dirname $0)
+oldrev=$(cat $dir/nixpkgs.json | jq -r .rev | sed 's/\(.\{7\}\).*/\1/')
+nix-shell -p nix-prefetch-git --run 'nix-prefetch-git \
+  --url https://github.com/NixOS/nixpkgs-channels \
+  --rev refs/heads/nixos-18.03' \
+> $dir/nixpkgs.json
+newrev=$(cat $dir/nixpkgs.json | jq -r .rev | sed 's/\(.\{7\}\).*/\1/')
+git commit $dir/nixpkgs.json -m "nixpkgs: $oldrev -> $newrev"