release 17.03-beta

nixos/modules/misc/version.nix

···
     defaultChannel = mkOption {
       internal = true;
       type = types.str;
-      default = https://nixos.org/channels/nixos-unstable;
+      default = https://nixos.org/channels/nixos-17.03;
       description = "Default NixOS channel to which the root user is subscribed.";
     };
 

nixos/release.nix

···
 
   version = fileContents ../.version;
   versionSuffix =
-    (if stableBranch then "." else "pre") + "${toString nixpkgs.revCount}.${nixpkgs.shortRev}";
+    (if stableBranch then "." else "beta") + "${toString (nixpkgs.revCount - 102184)}.${nixpkgs.shortRev}";
 
   forAllSystems = genAttrs supportedSystems;