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|
# This module defines global configuration for the Bash shell, in
# particular /etc/bashrc and /etc/profile.
{ config, pkgs, ... }:
with pkgs.lib;
let
cfge = config.environment;
cfg = config.programs.bash;
bashCompletion = optionalString cfg.enableCompletion ''
# Check whether we're running a version of Bash that has support for
# programmable completion. If we do, enable all modules installed in
# the system (and user profile).
if shopt -q progcomp &>/dev/null; then
. "${pkgs.bashCompletion}/etc/profile.d/bash_completion.sh"
nullglobStatus=$(shopt -p nullglob)
shopt -s nullglob
for p in $NIX_PROFILES; do
for m in "$p/etc/bash_completion.d/"* "$p/share/bash-completion/completions/"*; do
. $m
done
done
eval "$nullglobStatus"
unset nullglobStatus p m
fi
'';
bashAliases = concatStringsSep "\n" (
mapAttrsFlatten (k: v: "alias ${k}='${v}'") cfg.shellAliases
);
in
{
options = {
programs.bash = {
enable = mkOption {
default = true;
description = ''
Whenever to configure Bash as an interactive shell.
Note that this tries to make Bash the default
<option>users.defaultUserShell</option>,
which in turn means that you might need to explicitly
set this variable if you have another shell configured
with NixOS.
'';
type = types.bool;
};
shellAliases = mkOption {
default = config.environment.shellAliases // { which = "type -P"; };
description = ''
Set of aliases for bash shell. See <option>environment.shellAliases</option>
for an option format description.
'';
type = types.attrs; # types.attrsOf types.stringOrPath;
};
shellInit = mkOption {
default = "";
description = ''
Shell script code called during bash shell initialisation.
'';
type = types.lines;
};
loginShellInit = mkOption {
default = "";
description = ''
Shell script code called during login bash shell initialisation.
'';
type = types.lines;
};
interactiveShellInit = mkOption {
default = "";
description = ''
Shell script code called during interactive bash shell initialisation.
'';
type = types.lines;
};
promptInit = mkOption {
default = ''
# Provide a nice prompt.
PROMPT_COLOR="1;31m"
let $UID && PROMPT_COLOR="1;32m"
PS1="\n\[\033[$PROMPT_COLOR\][\u@\h:\w]\\$\[\033[0m\] "
if test "$TERM" = "xterm"; then
PS1="\[\033]2;\h:\u:\w\007\]$PS1"
fi
'';
description = ''
Shell script code used to initialise the bash prompt.
'';
type = types.lines;
};
enableCompletion = mkOption {
default = false;
description = ''
Enable Bash completion for all interactive bash shells.
'';
type = types.bool;
};
};
};
config = mkIf cfg.enable {
programs.bash = {
shellInit = ''
. ${config.system.build.setEnvironment}
${cfge.shellInit}
'';
loginShellInit = cfge.loginShellInit;
interactiveShellInit = ''
# Check the window size after every command.
shopt -s checkwinsize
# Disable hashing (i.e. caching) of command lookups.
set +h
${cfg.promptInit}
${bashCompletion}
${bashAliases}
${cfge.interactiveShellInit}
'';
};
environment.etc."profile".text =
''
# /etc/profile: DO NOT EDIT -- this file has been generated automatically.
# This file is read for login shells.
# Only execute this file once per shell.
if [ -n "$__ETC_PROFILE_SOURCED" ]; then return; fi
__ETC_PROFILE_SOURCED=1
# Prevent this file from being sourced by interactive non-login child shells.
export __ETC_PROFILE_DONE=1
${cfg.shellInit}
${cfg.loginShellInit}
# Read system-wide modifications.
if test -f /etc/profile.local; then
. /etc/profile.local
fi
if [ -n "''${BASH_VERSION:-}" ]; then
. /etc/bashrc
fi
'';
environment.etc."bashrc".text =
''
# /etc/bashrc: DO NOT EDIT -- this file has been generated automatically.
# Only execute this file once per shell.
if [ -n "$__ETC_BASHRC_SOURCED" -o -n "$NOSYSBASHRC" ]; then return; fi
__ETC_BASHRC_SOURCED=1
# If the profile was not loaded in a parent process, source
# it. But otherwise don't do it because we don't want to
# clobber overridden values of $PATH, etc.
if [ -z "$__ETC_PROFILE_DONE" ]; then
. /etc/profile
fi
# We are not always an interactive shell.
if [ -n "$PS1" ]; then
${cfg.interactiveShellInit}
fi
# Read system-wide modifications.
if test -f /etc/bashrc.local; then
. /etc/bashrc.local
fi
'';
# Configuration for readline in bash.
environment.etc."inputrc".source = ./inputrc;
users.defaultUserShell = mkDefault "/run/current-system/sw/bin/bash";
environment.pathsToLink = optionals cfg.enableCompletion [
"/etc/bash_completion.d"
"/share/bash-completion"
];
environment.shells =
[ "/run/current-system/sw/bin/bash"
"/var/run/current-system/sw/bin/bash"
"/run/current-system/sw/bin/sh"
"/var/run/current-system/sw/bin/sh"
"${pkgs.bashInteractive}/bin/bash"
"${pkgs.bashInteractive}/bin/sh"
];
};
}
|