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