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0fab94a844
It is currently not obvious how to install/use xonsh with dependencies and python packages.
This PR implements a wrapper that allows you to construct a custom xonsh environment by using:
``` nix
xonsh.override { extraPackages = ps: [ ps.requests ]; }
```
86 lines
2.0 KiB
Nix
86 lines
2.0 KiB
Nix
# This module defines global configuration for the xonsh.
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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.xonsh;
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in
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{
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options = {
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programs.xonsh = {
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enable = mkOption {
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default = false;
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description = lib.mdDoc ''
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Whether to configure xonsh as an interactive shell.
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'';
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type = types.bool;
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};
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package = mkOption {
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type = types.package;
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default = pkgs.xonsh;
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defaultText = literalExpression "pkgs.xonsh";
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example = literalExpression "pkgs.xonsh.override { extraPackages = ps: [ ps.requests ]; }";
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description = lib.mdDoc ''
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xonsh package to use.
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'';
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};
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config = mkOption {
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default = "";
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description = lib.mdDoc "Control file to customize your shell behavior.";
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type = types.lines;
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};
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};
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};
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config = mkIf cfg.enable {
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environment.etc."xonsh/xonshrc".text = ''
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# /etc/xonsh/xonshrc: DO NOT EDIT -- this file has been generated automatically.
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if not ''${...}.get('__NIXOS_SET_ENVIRONMENT_DONE'):
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# The NixOS environment and thereby also $PATH
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# haven't been fully set up at this point. But
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# `source-bash` below requires `bash` to be on $PATH,
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# so add an entry with bash's location:
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$PATH.add('${pkgs.bash}/bin')
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# Stash xonsh's ls alias, so that we don't get a collision
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# with Bash's ls alias from environment.shellAliases:
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_ls_alias = aliases.pop('ls', None)
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# Source the NixOS environment config.
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source-bash "${config.system.build.setEnvironment}"
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# Restore xonsh's ls alias, overriding that from Bash (if any).
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if _ls_alias is not None:
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aliases['ls'] = _ls_alias
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del _ls_alias
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${cfg.config}
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'';
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environment.systemPackages = [ cfg.package ];
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environment.shells =
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[ "/run/current-system/sw/bin/xonsh"
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"${cfg.package}/bin/xonsh"
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];
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};
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}
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