From 940fb56e7e450b7da56cc333d17ab0edb4cd1d0f Mon Sep 17 00:00:00 2001
From: Martin Fischer <martin@push-f.com>
Date: Sat, 26 Apr 2025 08:26:08 +0200
Subject: refactor: move channel metadata to separate .toml files

---
 nixos/rebuild | 15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)

(limited to 'nixos/rebuild')

diff --git a/nixos/rebuild b/nixos/rebuild
index 80a52cd..cfc14cf 100755
--- a/nixos/rebuild
+++ b/nixos/rebuild
@@ -11,19 +11,18 @@ if [ ! -f $configPath ]; then
     exit 1
 fi
 
-firstLine=$(head -n1 "$configPath")
-
-if ! echo "$firstLine" | grep -E ^"# channel *=" > /dev/null; then
-    echo "aborting: $configPath doesn't start with \`# channel=\"...\"\`, where ... is a pin from sources.json"
-    exit 1
-fi
-
 nix-eval() {
+    # FUTURE: use --raw when upgrading to NixOS 25.05
     nix-instantiate --eval --read-write-mode "$@" \
       | tr -d \"  # nix-instantiate has no raw output yet (like the experimental nix eval)
 }
 
-channel=$(nix-eval --argstr line "$(echo $firstLine | tr -d \#)" --expr '{line}: (builtins.fromTOML line).channel')
+channel=$(nix-eval --argstr host "$HOSTNAME" --expr '{host}:
+let
+  toml = builtins.readFile ./hosts/${host}/metadata.toml;
+in
+  (builtins.fromTOML toml).channel
+')
 nixpkgsPath=$(nix-eval --argstr channel "$channel" --expr '{channel}: (import ./npins).${channel}.outPath')
 
 # nixos-rebuild always reads Nixpkgs from the NIX_PATH,
-- 
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