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lass.pds.lassul.us/superconfig
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keys: refactor to use separate default.nix
author
lassulus
date
(Jan 26, 2026, 12:25 AM CET)
commit
ae5211df
ae5211dfa33288f2997de2cb0465fde35fc96877
parent
c3428319
c3428319cdf1ee220dafd16cebd3f3bfb7e52781
+135
-113
+133
keys/default.nix
+133
keys/default.nix
···
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# Key structure exposed without nixpkgs dependency
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# Uses only Nix builtins
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let
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# Helper: split string by delimiter (returns only non-empty string parts)
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splitString = sep: str: builtins.filter builtins.isString (builtins.split sep str);
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+
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# Helper: get last element of list
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last = list: builtins.elemAt list (builtins.length list - 1);
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# Helper: check if list is non-empty
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+
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# Helper: unique elements in a list
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unique =
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list: builtins.foldl' (acc: elem: if builtins.elem elem acc then acc else acc ++ [ elem ]) [ ] list;
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+
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# Helper to read age keys with different types
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readAgeKeys =
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baseDir:
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let
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dir = baseDir + "/age";
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in
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if builtins.pathExists dir then
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let
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allFiles = builtins.readDir dir;
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fileNames = builtins.attrNames allFiles;
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+
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# Process a single file and return { name, public?, identity? }
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processFile =
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fileName:
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let
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fileType = allFiles.${fileName};
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parts = splitString "\\." fileName;
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baseName = builtins.head parts;
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extension = if builtins.length parts > 1 then last parts else "";
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in
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if fileType == "regular" then
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if extension == "age" then
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{
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name = baseName;
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public = builtins.readFile (dir + "/${fileName}");
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identity = null;
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}
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else if extension == "identity" then
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{
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name = baseName;
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public = null;
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identity = builtins.readFile (dir + "/${fileName}");
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}
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else
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null
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else
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null;
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# Process all files
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processed = builtins.filter (x: x != null) (map processFile fileNames);
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+
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# Merge entries with same base name
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merged = builtins.foldl' (
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acc: entry:
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let
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existing =
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acc.${entry.name} or {
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public = null;
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identity = null;
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};
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in
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acc
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// {
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${entry.name} = {
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public = if entry.public != null then entry.public else existing.public;
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identity = if entry.identity != null then entry.identity else existing.identity;
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};
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}
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) { } processed;
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in
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merged
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else
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{ };
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# Helper to read SSH keys (handle key pairs and encrypted private keys)
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readSshKeys =
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baseDir:
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let
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dir = baseDir + "/ssh";
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in
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if builtins.pathExists dir then
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let
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allFiles = builtins.readDir dir;
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fileNames = builtins.attrNames allFiles;
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# Extract base names (remove all suffixes)
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keyNames = unique (map (name: builtins.head (splitString "\\." name)) fileNames);
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in
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builtins.listToAttrs (
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map (
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keyName:
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let
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publicKeyFile = dir + "/${keyName}.pub";
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encryptedPrivateKeyFile = dir + "/${keyName}.age";
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hasPublicKey = builtins.pathExists publicKeyFile;
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hasEncryptedPrivateKey = builtins.pathExists encryptedPrivateKeyFile;
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in
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{
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name = keyName;
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value = {
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public = if hasPublicKey then builtins.readFile publicKeyFile else null;
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# Expose encrypted private keys (safe), but never unencrypted ones
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private = if hasEncryptedPrivateKey then encryptedPrivateKeyFile else null;
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encrypted = hasEncryptedPrivateKey;
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};
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}
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) keyNames
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)
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else
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{ };
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baseDir = ./.;
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in
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{
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# SSH keys (handle both public and private key files)
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ssh = readSshKeys baseDir;
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# PGP/GPG keys - define directly with metadata
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pgp = {
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yubi_pgp = {
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key = ./pgp/yubi_pgp.pgp;
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id = "DBCD757846069B392EA9401D6657BE8A8D1EE807";
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};
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};
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# Age keys (public keys only)
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age = readAgeKeys baseDir;
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}
+2
-113
keys/flake-module.nix
+2
-113
keys/flake-module.nix
···
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{ lib, ... }:
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let
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# Helper to read age keys with different types
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readAgeKeys =
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baseDir:
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let
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dir = baseDir + "/age";
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in
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if builtins.pathExists dir then
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let
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allFiles = builtins.readDir dir;
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# Group files by base name and type
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processFile =
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name: type:
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if type == "regular" then
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let
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parts = lib.splitString "." name;
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baseName = builtins.head parts;
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extension = if builtins.length parts > 1 then lib.last parts else "";
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in
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{
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name = baseName;
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value =
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if extension == "age" then
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{
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public = builtins.readFile (dir + "/${name}");
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identity = null;
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}
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else if extension == "identity" then
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{
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public = null;
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identity = builtins.readFile (dir + "/${name}");
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}
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else
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null;
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}
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else
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null;
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# Process all files and merge by base name
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fileAttrs = lib.filterAttrs (_n: v: v != null) (lib.mapAttrs processFile allFiles);
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# Merge entries with same base name
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mergeEntries = lib.foldl' (
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acc: entry:
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let
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existing =
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acc.${entry.name} or {
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public = null;
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identity = null;
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};
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merged = {
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public = if entry.value.public != null then entry.value.public else existing.public;
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identity = if entry.value.identity != null then entry.value.identity else existing.identity;
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};
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in
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acc // { ${entry.name} = merged; }
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) { } (lib.attrValues fileAttrs);
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in
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mergeEntries
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else
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{ };
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# Helper to read SSH keys (handle key pairs and encrypted private keys)
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readSshKeys =
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baseDir:
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let
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dir = baseDir + "/ssh";
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in
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if builtins.pathExists dir then
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let
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allFiles = builtins.readDir dir;
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# Group files by their base name (remove all suffixes)
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keyNames = lib.unique (
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map (name: builtins.head (lib.splitString "." name)) (builtins.attrNames allFiles)
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);
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in
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lib.listToAttrs (
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map (
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keyName:
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let
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publicKeyFile = dir + "/${keyName}.pub";
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encryptedPrivateKeyFile = dir + "/${keyName}.age";
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hasPublicKey = builtins.pathExists publicKeyFile;
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hasEncryptedPrivateKey = builtins.pathExists encryptedPrivateKeyFile;
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in
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lib.nameValuePair keyName {
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public = if hasPublicKey then builtins.readFile publicKeyFile else null;
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# Expose encrypted private keys (safe), but never unencrypted ones
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private = if hasEncryptedPrivateKey then encryptedPrivateKeyFile else null;
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encrypted = hasEncryptedPrivateKey;
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}
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) keyNames
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)
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else
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{ };
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in
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{ ... }:
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{
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flake.keys = {
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# SSH keys (handle both public and private key files)
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ssh = readSshKeys ./.;
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# PGP/GPG keys - define directly with metadata
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pgp = {
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yubi_pgp = {
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key = ./pgp/yubi_pgp.pgp;
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id = "DBCD757846069B392EA9401D6657BE8A8D1EE807";
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};
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};
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# Age keys (public keys only)
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age = readAgeKeys ./.;
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};
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flake.keys = import ./.;
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}