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home-manager/modules/programs/info.nix

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# info.nix -- install texinfo and create `dir` file
# This is a helper for the GNU info documentation system. By default,
# the `info` command (and the Info subsystem within Emacs) gives easy
# access to the info files stored system-wide, but not info files in
# your ~/.nix-profile.
# Specifically, although info can then find files when you explicitly
# ask for them, it doesn't show them to you in the table of contents
# on startup. To do that requires a `dir` file. NixOS keeps the
# system-wide `dir` file up to date, but ignores files installed in
# user profiles.
# This module contains extra profile commands that generate the `dir`
# for your home profile. Then when you start info (and both `dir`
# files are in your $INFOPATH), it will *merge* the contents of the
# two files, showing you a unified table of contents for all packages.
# This is really nice.
{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.programs.info;
# Installs this package -- the interactive just means that it
# includes the curses `info` program. We also use `install-info`
# from this package in the activation script.
infoPkg = pkgs.texinfoInteractive;
2020-02-02 00:39:17 +01:00
in {
imports = [
(mkRemovedOptionModule [ "programs" "info" "homeInfoDirLocation" ] ''
The `dir` file is now generated as part of the Home Manager profile and
will no longer be placed in your home directory.
'')
];
options.programs.info.enable = mkEnableOption "GNU Info";
config = mkIf cfg.enable {
home.packages = [
infoPkg
# Make sure the target directory is a real directory.
(pkgs.runCommandLocal "dummy-info-dir1" { } "mkdir -p $out/share/info")
(pkgs.runCommandLocal "dummy-info-dir2" { } "mkdir -p $out/share/info")
];
home.extraOutputsToInstall = [ "info" ];
home.extraProfileCommands = let infoPath = "$out/share/info";
in ''
if [[ -w "${infoPath}" && ! -e "${infoPath}/dir" ]]; then
PATH="${lib.makeBinPath [ pkgs.gzip infoPkg ]}''${PATH:+:}$PATH" \
find -L "${infoPath}" \( -name '*.info' -o -name '*.info.gz' \) \
-exec install-info '{}' "${infoPath}/dir" ';'
fi
'';
};
}