From 0ac11166a8fb22d1ce4de111f46e8a3ba1de7663 Mon Sep 17 00:00:00 2001
From: Benedikt Peetz <benedikt.peetz@b-peetz.de>
Date: Fri, 20 Dec 2024 17:50:16 +0100
Subject: refactor(lib): Upstream `lib` to vhack.eu

This allows to share it with the server config.
---
 lib/by-name-overlay.nix | 76 -------------------------------------------------
 1 file changed, 76 deletions(-)
 delete mode 100644 lib/by-name-overlay.nix

(limited to 'lib/by-name-overlay.nix')

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
-- 
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