diff options
Diffstat (limited to 'lib/by-name-overlay.nix')
-rw-r--r-- | lib/by-name-overlay.nix | 76 |
1 files changed, 0 insertions, 76 deletions
diff --git a/lib/by-name-overlay.nix b/lib/by-name-overlay.nix deleted file mode 100644 index 4d700a8f..00000000 --- a/lib/by-name-overlay.nix +++ /dev/null @@ -1,76 +0,0 @@ -{warn}: -# Adapted from this: https://github.com/NixOS/nixpkgs/blob/1814b56453c91192f6d5a6276079948f9fe96c18/pkgs/top-level/by-name-overlay.nix -# This file should not depend on `pkgs` and thus not use `lib`. -{ - baseDirectory, - fileName, - finalizeFunction, - coImportsNameFunction ? null, - coImportsWarnMessageObject ? null, -}: let - # Takes a list of attrs as input and returns one merged attr set. - flattenAttrs = list: - if builtins.isList list - then - builtins.foldl' (acc: elem: - if builtins.isList elem - # Merging them with `//` is okay here, as we can be sure that the attr names are - # unique (they were separate dictionary after all) - then acc // (flattenAttrs elem) - else acc // elem) {} - list - else list; - - # From nixpkgs/lib {{{ - # These functions are taken straight out of the `nixpkgs/lib`. - # We can't depended on `pkgs` (and thus on `lib`), because the `pkgs` module argument - # is only defined in the `nixpkgs` module (which is imported through this function). - mapAttrsToList = f: attrs: - builtins.map (name: f name attrs.${name}) (builtins.attrNames attrs); - - nameValuePair = name: value: {inherit name value;}; - filterAttrs = pred: set: - builtins.listToAttrs (builtins.concatMap (name: let - v = set.${name}; - in - if pred name v - then [(nameValuePair name v)] - else []) (builtins.attrNames set)); - # }}} - - # Module files for a single shard - # Type: String -> String -> ListOf Path - namesForShard = shard: type: - if type != "directory" - then warn "Ignored non-directory, whilst importing by-name directory (${fileName}): '${shard}'" {} - else let - mkPath = name: _type: let - path = baseDirectory + "/${shard}/${name}" + "/${fileName}"; - coImportPath = - if coImportsNameFunction != null - then - coImportsNameFunction - {inherit shard name;} - else path; - in - if builtins.pathExists path - then - if builtins.pathExists coImportPath - then path - else warn "'${builtins.toString coImportPath}' does not exist. Should include ${coImportsWarnMessageObject} for '${shard}/${name}'" path - else warn "'${builtins.toString path}' does not exist. Skipped" null; - in - filterAttrs (name: value: value != null) - (builtins.mapAttrs - mkPath - (builtins.readDir (baseDirectory + "/${shard}"))); - - # A list of all module paths. - # These can the be simply injected into `import` - files = flattenAttrs (mapAttrsToList namesForShard (builtins.readDir baseDirectory)); - output = - builtins.mapAttrs - finalizeFunction - files; -in - output |