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home-manager/modules/targets/generic-linux.nix
Igor b0b0c3d943
targets/generic-linux: use xdg path for defexpr
Fixes warnings about the non-existent `~/.nix-defexpr` folder when
using `use-xdg-base-directories = true`.

Example:

    warning: Nix search path entry '/home/user/.nix-defexpr/channels' does not exist, ignoring
    Starting Home Manager activation
    Activating checkFilesChanged
    Activating checkLinkTargets
    Activating writeBoundary
    Activating installPackages
    replacing old 'home-manager-path'
    installing 'home-manager-path'
    Activating dconfSettings
    Activating linkDesktopApplications
    Activating linkGeneration
    Cleaning up orphan links from /home/user
    No change so reusing latest profile generation 13
    Creating home file links in /home/user
    Activating onFilesChange
    Activating reloadSystemd
    warning: Nix search path entry '/home/user/.nix-defexpr/channels' does not exist, ignoring
2024-03-09 13:43:12 +01:00

111 lines
3.3 KiB
Nix

{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.targets.genericLinux;
profileDirectory = config.home.profileDirectory;
nixPkg = if config.nix.package == null then pkgs.nix else config.nix.package;
in {
imports = [
(mkRenamedOptionModule [ "targets" "genericLinux" "extraXdgDataDirs" ] [
"xdg"
"systemDirs"
"data"
])
];
options.targets.genericLinux = {
enable = mkEnableOption "" // {
description = ''
Whether to enable settings that make Home Manager work better on
GNU/Linux distributions other than NixOS.
'';
};
};
config = mkIf cfg.enable {
assertions = [
(hm.assertions.assertPlatform "targets.genericLinux" pkgs platforms.linux)
];
xdg.systemDirs.data = [
# Nix profiles
"\${NIX_STATE_DIR:-/nix/var/nix}/profiles/default/share"
"${profileDirectory}/share"
# Distribution-specific
"/usr/share/ubuntu"
"/usr/local/share"
"/usr/share"
"/var/lib/snapd/desktop"
];
# We need to append system-wide FHS directories due to the default prefix
# resolving to the Nix store.
# https://github.com/nix-community/home-manager/pull/2891#issuecomment-1101064521
home.sessionVariables = {
XCURSOR_PATH = "$XCURSOR_PATH\${XCURSOR_PATH:+:}" + concatStringsSep ":" [
"${config.home.profileDirectory}/share/icons"
"/usr/share/icons"
"/usr/share/pixmaps"
];
};
home.sessionVariablesExtra = ''
. "${nixPkg}/etc/profile.d/nix.sh"
# reset TERM with new TERMINFO available (if any)
export TERM="$TERM"
'';
# We need to source both nix.sh and hm-session-vars.sh as noted in
# https://github.com/nix-community/home-manager/pull/797#issuecomment-544783247
programs.bash.initExtra = ''
. "${nixPkg}/etc/profile.d/nix.sh"
. "${profileDirectory}/etc/profile.d/hm-session-vars.sh"
'';
programs.zsh.envExtra = ''
# Make system functions available to zsh
() {
setopt LOCAL_OPTIONS CASE_GLOB EXTENDED_GLOB
local system_fpaths=(
# Package default
/usr/share/zsh/site-functions(/-N)
# Debian
/usr/share/zsh/functions/**/*(/-N)
/usr/share/zsh/vendor-completions/(/-N)
/usr/share/zsh/vendor-functions/(/-N)
)
fpath=(''${fpath} ''${system_fpaths})
}
'';
systemd.user.sessionVariables = let
# https://github.com/archlinux/svntogit-packages/blob/packages/ncurses/trunk/PKGBUILD
# https://salsa.debian.org/debian/ncurses/-/blob/master/debian/rules
# https://src.fedoraproject.org/rpms/ncurses/blob/main/f/ncurses.spec
# https://gitweb.gentoo.org/repo/gentoo.git/tree/sys-libs/ncurses/ncurses-6.2-r1.ebuild
distroTerminfoDirs = concatStringsSep ":" [
"/etc/terminfo" # debian, fedora, gentoo
"/lib/terminfo" # debian
"/usr/share/terminfo" # package default, all distros
];
in {
NIX_PATH = if config.nix.enable
&& (config.nix.settings.use-xdg-base-directories or false) then
"${config.xdg.stateHome}/nix/defexpr/channels\${NIX_PATH:+:}$NIX_PATH"
else
"$HOME/.nix-defexpr/channels\${NIX_PATH:+:}$NIX_PATH";
TERMINFO_DIRS =
"${profileDirectory}/share/terminfo:$TERMINFO_DIRS\${TERMINFO_DIRS:+:}${distroTerminfoDirs}";
};
};
}