124 lines
2.9 KiB
Nix
124 lines
2.9 KiB
Nix
{ config, lib, pkgs, ... }:
|
|
|
|
with lib;
|
|
|
|
let
|
|
|
|
cfg = config.programs.less;
|
|
|
|
configFile = ''
|
|
#command
|
|
${concatStringsSep "\n"
|
|
(mapAttrsToList (command: action: "${command} ${action}") cfg.commands)
|
|
}
|
|
${if cfg.clearDefaultCommands then "#stop" else ""}
|
|
|
|
#line-edit
|
|
${concatStringsSep "\n"
|
|
(mapAttrsToList (command: action: "${command} ${action}") cfg.lineEditingKeys)
|
|
}
|
|
|
|
#env
|
|
${concatStringsSep "\n"
|
|
(mapAttrsToList (variable: values: "${variable}=${values}") cfg.envVariables)
|
|
}
|
|
'';
|
|
|
|
lessKey = pkgs.runCommand "lesskey"
|
|
{ src = pkgs.writeText "lessconfig" configFile; }
|
|
"${pkgs.less}/bin/lesskey -o $out $src";
|
|
|
|
lessPipe = pkgs.writeScriptBin "lesspipe.sh" ''
|
|
#! /bin/sh
|
|
case "$1" in
|
|
*.gz)
|
|
${pkgs.gzip}/bin/gunzip --stdout "$1" 2>/dev/null
|
|
;;
|
|
*.xz)
|
|
${pkgs.xz}/bin/unxz --stdout "$1" 2>/dev/null
|
|
;;
|
|
*.bz2)
|
|
${pkgs.bzip2}/bin/bunzip2 --stdout "$1" 2>/dev/null
|
|
;;
|
|
*) exit 1
|
|
;;
|
|
esac
|
|
exit $?
|
|
'';
|
|
|
|
in
|
|
|
|
{
|
|
options = {
|
|
|
|
programs.less = {
|
|
|
|
enable = mkEnableOption "less";
|
|
|
|
commands = mkOption {
|
|
type = types.attrsOf types.str;
|
|
default = {};
|
|
example = {
|
|
"h" = "noaction 5\e(";
|
|
"l" = "noaction 5\e)";
|
|
};
|
|
description = "Defines new command keys.";
|
|
};
|
|
|
|
clearDefaultCommands = mkOption {
|
|
type = types.bool;
|
|
default = false;
|
|
description = ''
|
|
Clear all default commands.
|
|
You should remember to set the quit key.
|
|
Otherwise you will not be able to leave less without killing it.
|
|
'';
|
|
};
|
|
|
|
lineEditingKeys = mkOption {
|
|
type = types.attrsOf types.str;
|
|
default = {};
|
|
example = {
|
|
"\e" = "abort";
|
|
};
|
|
description = "Defines new line-editing keys.";
|
|
};
|
|
|
|
envVariables = mkOption {
|
|
type = types.attrsOf types.str;
|
|
default = {};
|
|
example = {
|
|
LESS = "--quit-if-one-screen";
|
|
};
|
|
description = "Defines environment variables.";
|
|
};
|
|
|
|
autoExtract = mkOption {
|
|
type = types.bool;
|
|
default = true;
|
|
description = ''
|
|
When enabled less automatically extracts .gz .xz .bz2 files before reading them.
|
|
'';
|
|
};
|
|
};
|
|
};
|
|
|
|
config = mkIf cfg.enable {
|
|
|
|
environment.systemPackages = [ pkgs.less ];
|
|
|
|
environment.variables."LESSKEY_SYSTEM" = toString lessKey;
|
|
environment.variables."LESSOPEN" = "|${lessPipe}/bin/lesspipe.sh %s";
|
|
|
|
warnings = optional (
|
|
cfg.clearDefaultCommands && (all (x: x != "quit") (attrValues cfg.commands))
|
|
) ''
|
|
config.programs.less.clearDefaultCommands clears all default commands of less but there is no alternative binding for exiting.
|
|
Consider adding a binding for 'quit'.
|
|
'';
|
|
};
|
|
|
|
meta.maintainers = with maintainers; [ johnazoidberg ];
|
|
|
|
}
|