use variable for main channel

flake.nix

@@ -1,7 +1,10 @@
+let
+  channel = "unstable";
+in
 {
   description = "L config";
   inputs = {
-    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-${channel}";
 
     home-manager = {
       url = "github:nix-community/home-manager";
@@ -47,7 +50,7 @@
             {
               home-manager.useUserPackages = true;
               home-manager.users.vbm = ./home/home.nix;
-              home-manager.extraSpecialArgs = { inherit inputs system; };
+              home-manager.extraSpecialArgs = { inherit inputs system channel; };
               home-manager.sharedModules = [
                 inputs.nixvim.homeModules.nixvim
                 inputs.sops-nix.homeManagerModules.sops

home/programs/librewolf.nix

@@ -2,6 +2,7 @@
   pkgs,
   inputs,
   system,
+  channel,
   ...
 }:
 {
@@ -45,7 +46,7 @@
               params = [
                 {
                   name = "channel";
-                  value = "unstable";
+                  value = channel;
                 }
                 {
                   name = "query";
@@ -67,7 +68,7 @@
               params = [
                 {
                   name = "channel";
-                  value = "unstable";
+                  value = channel;
                 }
                 {
                   name = "search";
@@ -92,7 +93,7 @@
                 }
                 {
                   name = "channel";
-                  value = "unstable";
+                  value = channel;
                 }
                 {
                   name = "query";