From 8c566779beedb979d1c8a77f543403d4dda63840 Mon Sep 17 00:00:00 2001
From: Sean Buckley <sean.bck@gmail.com>
Date: Fri, 2 Apr 2021 17:48:50 -0400
Subject: [PATCH] update channel script for flakes

---
 modules/cli.nix | 11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/modules/cli.nix b/modules/cli.nix
index 829094f..2b1484f 100644
--- a/modules/cli.nix
+++ b/modules/cli.nix
@@ -58,15 +58,12 @@ in
     '')
 
     (writeShellScriptBin "channel" ''
-      nixos="/nix/var/nix/profiles/per-user/root/channels/nixos"
-      [[ "$(<$nixos/.version-suffix)" =~ ^pre ]] &&
-          channel="unstable" ||
-          channel="$(<$nixos/.version)"
+      branch="$(jq -r .nodes.nixpkgs.original.ref </etc/nixos/flake.lock)"
       echo
-      echo "nixos-$channel"
+      echo "$branch"
       echo
-      echo "$(<$nixos/.git-revision) current local"
-      echo "$(curl --silent -L "https://channels.nixos.org/nixos-$channel/git-revision") latest available"
+      echo "$(jq -r .nodes.nixpkgs.locked.rev </etc/nixos/flake.lock) current local"
+      echo "$(git ls-remote https://github.com/NixOS/nixpkgs.git "$branch" | cut -f1) latest available"
       echo
     '')
   ];