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Diffstat (limited to 'nixos/modules/programs/bash/bash.nix')
| -rw-r--r-- | nixos/modules/programs/bash/bash.nix | 217 |
1 files changed, 217 insertions, 0 deletions
diff --git a/nixos/modules/programs/bash/bash.nix b/nixos/modules/programs/bash/bash.nix new file mode 100644 index 00000000000..7281126979e --- /dev/null +++ b/nixos/modules/programs/bash/bash.nix @@ -0,0 +1,217 @@ +# This module defines global configuration for the Bash shell, in +# particular /etc/bashrc and /etc/profile. + +{ config, lib, pkgs, ... }: + +with lib; + +let + + cfge = config.environment; + + cfg = config.programs.bash; + + bashAliases = concatStringsSep "\n" ( + mapAttrsFlatten (k: v: "alias ${k}=${escapeShellArg v}") + (filterAttrs (k: v: v != null) cfg.shellAliases) + ); + +in + +{ + imports = [ + (mkRemovedOptionModule [ "programs" "bash" "enable" ] "") + ]; + + 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 = {}; + description = '' + Set of aliases for bash shell, which overrides <option>environment.shellAliases</option>. + See <option>environment.shellAliases</option> for an option format description. + ''; + type = with types; attrsOf (nullOr (either str path)); + }; + + 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 if the terminal supports it. + if [ "$TERM" != "dumb" ] || [ -n "$INSIDE_EMACS" ]; then + PROMPT_COLOR="1;31m" + ((UID)) && PROMPT_COLOR="1;32m" + if [ -n "$INSIDE_EMACS" ] || [ "$TERM" = "eterm" ] || [ "$TERM" = "eterm-color" ]; then + # Emacs term mode doesn't support xterm title escape sequence (\e]0;) + PS1="\n\[\033[$PROMPT_COLOR\][\u@\h:\w]\\$\[\033[0m\] " + else + PS1="\n\[\033[$PROMPT_COLOR\][\[\e]0;\u@\h: \w\a\]\u@\h:\w]\\$\[\033[0m\] " + fi + if test "$TERM" = "xterm"; then + PS1="\[\033]2;\h:\u:\w\007\]$PS1" + fi + fi + ''; + description = '' + Shell script code used to initialise the bash prompt. + ''; + type = types.lines; + }; + + promptPluginInit = mkOption { + default = ""; + description = '' + Shell script code used to initialise bash prompt plugins. + ''; + type = types.lines; + internal = true; + }; + + }; + + }; + + config = /* mkIf cfg.enable */ { + + programs.bash = { + + shellAliases = mapAttrs (name: mkDefault) cfge.shellAliases; + + shellInit = '' + if [ -z "$__NIXOS_SET_ENVIRONMENT_DONE" ]; then + . ${config.system.build.setEnvironment} + fi + + ${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} + ${cfg.promptPluginInit} + ${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 "$__ETC_BASHRC_SOURCED" ] || [ -n "$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 + ${cfg.interactiveShellInit} + fi + + # Read system-wide modifications. + if test -f /etc/bashrc.local; then + . /etc/bashrc.local + fi + ''; + + # Configuration for readline in bash. We use "option default" + # priority to allow user override using both .text and .source. + environment.etc.inputrc.source = mkOptionDefault ./inputrc; + + users.defaultUserShell = mkDefault pkgs.bashInteractive; + + environment.pathsToLink = optionals cfg.enableCompletion [ + "/etc/bash_completion.d" + "/share/bash-completion" + ]; + + environment.shells = + [ "/run/current-system/sw/bin/bash" + "/run/current-system/sw/bin/sh" + "${pkgs.bashInteractive}/bin/bash" + "${pkgs.bashInteractive}/bin/sh" + ]; + + }; + +} |