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feat(mc): make the F2 menu overridable via local.mc.menu

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Expose the user menu as a `types.lines` option instead of a baked source
file. The shipped menu is a `mkBefore` definition (not a `default`, which a
consumer definition would drop), so `local.mc.menu = "…"` appends entries
after the baseline and `lib.mkForce "…"` replaces it wholesale.

`ini` stays a baked source file: it is section/key=value, so append-to-extend
risks duplicate keys — not a safe override path.
This commit is contained in:
Daniel Fainberg
2026-07-10 23:07:16 +02:00
parent eab578e699
commit 08a14d52f2
1 changed files with 26 additions and 6 deletions
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modules/mc.nix
+26 -6
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@@ -10,23 +10,43 @@
# mutable runtime state (history, cursor positions) in $XDG_DATA_HOME/mc — no
# env vars needed. `ini` sets auto_save_setup=false so mc never rewrites these
# read-only store symlinks on exit.
#
# The F2 menu is a `types.lines` option, not a baked source file, so consumers
# can extend or replace it. The shipped menu is a `mkBefore` definition (stays
# first, ahead of appended entries), NOT a `default` — a `default` is dropped
# the moment a consumer adds a definition, which would lose the base. As a real
# definition it merges: `local.mc.menu = "…";` appends after the base entries;
# `lib.mkForce "…"` replaces it wholesale.
{ config, lib, pkgs, ... }:
{
options.local.mc.otherDir = lib.mkOption {
type = lib.types.str;
default = config.home.homeDirectory;
defaultText = lib.literalExpression "config.home.homeDirectory";
description = "Startup directory for mc's other (right) panel.";
options.local.mc = {
otherDir = lib.mkOption {
type = lib.types.str;
default = config.home.homeDirectory;
defaultText = lib.literalExpression "config.home.homeDirectory";
description = "Startup directory for mc's other (right) panel.";
};
menu = lib.mkOption {
type = lib.types.lines;
description = ''
Contents of mc's F2 user menu. The shipped baseline is a mkBefore
definition, so a plain assignment appends entries after it; use
lib.mkForce to replace it entirely.
'';
};
};
config = {
home.packages = [ pkgs.mc pkgs.ouch ];
local.mc.menu = lib.mkBefore (builtins.readFile ./assets/mc/menu);
xdg.configFile = {
"mc/ini".source = ./assets/mc/ini;
"mc/menu".source = ./assets/mc/menu;
"mc/menu".text = config.local.mc.menu;
# Generated (not a static asset) so other_dir tracks the option instead of
# baking in a personal path.