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satellite/modules/home-manager/persistence.nix

139 lines
4.9 KiB
Nix

# My own module with nicer syntax for impernanence
{ lib, config, ... }:
let cfg = config.satellite.persistence;
in
{
# {{{ Option definition
options.satellite.persistence = {
enable = lib.mkEnableOption "satellite persistence";
at = lib.mkOption {
default = { };
description = "Record of persistent locations (eg: /persist)";
type = lib.types.attrsOf (lib.types.submodule (args: {
config = {
home = "${args.config.path}${config.home.homeDirectory}";
};
options = {
# {{{ Location options
path = lib.mkOption {
type = lib.types.str;
example = "/persist";
description = "The root location to store the home directory for files in this record";
};
home = lib.mkOption {
type = lib.types.str;
description = "The path to the home directory for files in this record";
};
prefixDirectories = lib.mkOption {
type = lib.types.bool;
default = true;
description = "Whether to enable gnu/stow type prefix directories";
};
# }}}
# {{{ Apps
apps = lib.mkOption {
default = { };
description = "Record of gnu/stow-style apps to be stored in this location";
type = lib.types.attrsOf (lib.types.submodule ({ name, ... }: {
options = {
name = lib.mkOption {
type = lib.types.str;
default = name;
description = "The gnu/stow-style subdirectory name";
};
files = lib.mkOption {
type = lib.types.listOf lib.types.str;
default = [ ];
example = [ ".screenrc" ];
description = ''
A list of files in your home directory you want to
link to persistent storage. Allows both absolute paths
and paths relative to the home directory.
'';
};
directories = lib.mkOption {
default = [ ];
description = ''
Modified version of `home.persistence.*.directories` which takes in absolute paths.
'';
type = lib.types.listOf (lib.types.either lib.types.str (lib.types.submodule {
options = {
directory = lib.mkOption {
type = lib.types.str;
example = "/home/username/.config/nvim";
description = "The directory path to be linked.";
};
method = lib.mkOption {
type = lib.types.enum [ "bindfs" "symlink" ];
default = "symlink";
description = ''
The linking method that should be used for this
directory. bindfs is the default and works for most use
cases, however some programs may behave better with
symlinks.
'';
};
};
}));
};
};
}));
};
# }}}
};
}));
};
};
# }}}
# {{{ Config generation
config =
let
makeLocation = location:
let
# {{{ Path processing
processPath = appName: path:
let
suffix = "${lib.strings.removePrefix "${config.home.homeDirectory}/" (builtins.toString path)}";
prefix = if location.prefixDirectories then "${appName}/" else "";
in
# lib.debug.traceSeq "\nProcessing path at location ${location.path} and app ${appName} from original path ${value} to ${prefix + suffix}"
(prefix + suffix);
# }}}
# {{{ Constructors
mkDirectory = appName: directory:
if builtins.isAttrs directory then {
method = directory.method;
directory = processPath appName directory.directory;
}
else processPath appName directory;
mkAppDirectory = app: builtins.map (mkDirectory app.name) app.directories;
mkAppFiles = app: builtins.map (processPath app.name) app.files;
# }}}
in
# {{{ Impermanence config generation
lib.attrsets.nameValuePair location.home {
removePrefixDirectory = location.prefixDirectories;
allowOther = true;
directories = lib.lists.flatten
(lib.attrsets.mapAttrsToList (_: mkAppDirectory) location.apps);
files = lib.lists.flatten
(lib.attrsets.mapAttrsToList (_: mkAppFiles) location.apps);
};
# }}}
in
lib.mkIf cfg.enable {
home.persistence = lib.attrsets.mapAttrs' (_: makeLocation) cfg.at;
};
# }}}
}