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|
lib: _: with lib; rec {
my = import ./my.nix lib;
dns = import ./dns.nix;
isEven =
number:
assert (builtins.isInt number) || (builtins.isFloat number);
builtins.div number 2 == 0;
isOdd = number: !isEven number;
pow =
base: exponent:
assert (builtins.isInt base) && (builtins.isInt exponent);
assert exponent > 0;
builtins.foldl' (x: _: x * base) 1 (builtins.genList (_: _) exponent);
mkTcpMem =
min: ini: max:
assert min <= ini && ini <= max;
concatMapStrings (x: toString x + " ") (
map (pow 2) [
min
ini
max
]
);
# Load all files from directory (partially recursively).
#
# Usage: Assuming other Nix files are present in a directory:
# ```
# { ... }: {
# imports = attrValue (modulesIn ./.);
#
# services.foobar.enable = true;
# }
# ```
#
modulesIn =
dir:
pipe dir [
builtins.readDir
(mapAttrsToList (
name: type:
let
modulePath = dir + "/${name}";
in
if type == "regular" && hasSuffix ".nix" name && name != "default.nix" then
[ (nameValuePair (removeSuffix ".nix" name) modulePath) ]
else if type == "directory" && pathExists (modulePath + "/default.nix") then
[ (nameValuePair name modulePath) ]
else
[ ]
))
concatLists
listToAttrs
];
# Override a module using another Nixpkgs source tree.
#
# Usage: Assuming we want to override "services.foobar.enable":
# ```
# { config, lib, ... }:
# (lib.modulesFromRef
# "services/security/foobar.nix"
# "azahi:fix-foobar"
# "sha256-AAA..."
# ) // {
# config = {
# serices.foobar.enable = true;
# };
# }
# ```
# or
# ```
# nixosConfigurations.machine = nixosSystem {
# modules = [
# (_: modulesFromRef "services/security/foobar.nix" "azahi:foobar-fix" "sha256-AAA...")
# ];
# };
# ```
#
moduleFromRef = module: ref: sha256: {
disabledModules = [ module ];
imports = [
(
let
src = builtins.fetchTarball {
url =
let
cons = splitString ":" ref;
owner = head cons;
branch = last cons;
in
"https://github.com/${owner}/nixpkgs/archive/refs/heads/${branch}.tar.gz";
inherit sha256;
};
in
"${src}/nixos/modules/${module}"
)
];
};
}
|
