flake.lock

@@ -1,71 +1,5 @@
 {
   "nodes": {
-    "agenix": {
-      "inputs": {
-        "darwin": "darwin",
-        "home-manager": "home-manager",
-        "nixpkgs": [
-          "nixpkgs"
-        ],
-        "systems": "systems"
-      },
-      "locked": {
-        "lastModified": 1750173260,
-        "narHash": "sha256-9P1FziAwl5+3edkfFcr5HeGtQUtrSdk/MksX39GieoA=",
-        "owner": "ryantm",
-        "repo": "agenix",
-        "rev": "531beac616433bac6f9e2a19feb8e99a22a66baf",
-        "type": "github"
-      },
-      "original": {
-        "owner": "ryantm",
-        "repo": "agenix",
-        "type": "github"
-      }
-    },
-    "darwin": {
-      "inputs": {
-        "nixpkgs": [
-          "agenix",
-          "nixpkgs"
-        ]
-      },
-      "locked": {
-        "lastModified": 1744478979,
-        "narHash": "sha256-dyN+teG9G82G+m+PX/aSAagkC+vUv0SgUw3XkPhQodQ=",
-        "owner": "lnl7",
-        "repo": "nix-darwin",
-        "rev": "43975d782b418ebf4969e9ccba82466728c2851b",
-        "type": "github"
-      },
-      "original": {
-        "owner": "lnl7",
-        "ref": "master",
-        "repo": "nix-darwin",
-        "type": "github"
-      }
-    },
-    "home-manager": {
-      "inputs": {
-        "nixpkgs": [
-          "agenix",
-          "nixpkgs"
-        ]
-      },
-      "locked": {
-        "lastModified": 1745494811,
-        "narHash": "sha256-YZCh2o9Ua1n9uCvrvi5pRxtuVNml8X2a03qIFfRKpFs=",
-        "owner": "nix-community",
-        "repo": "home-manager",
-        "rev": "abfad3d2958c9e6300a883bd443512c55dfeb1be",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-community",
-        "repo": "home-manager",
-        "type": "github"
-      }
-    },
     "nixpkgs": {
       "locked": {
         "lastModified": 1752436162,
@@ -84,24 +18,8 @@
     },
     "root": {
       "inputs": {
-        "agenix": "agenix",
         "nixpkgs": "nixpkgs"
       }
-    },
-    "systems": {
-      "locked": {
-        "lastModified": 1681028828,
-        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
-        "owner": "nix-systems",
-        "repo": "default",
-        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-systems",
-        "repo": "default",
-        "type": "github"
-      }
     }
   },
   "root": "root",

flake.nix

@@ -1,15 +1,13 @@
 {
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.05";
-    agenix.url = "github:ryantm/agenix";
-    agenix.inputs.nixpkgs.follows = "nixpkgs";
   };
 
-  outputs = { self, nixpkgs, agenix, ... }:
+  outputs = { self, nixpkgs, ... }:
 let
   mkConf = name: nixpkgs.lib.nixosSystem {
     system = "x86_64-linux";
-    specialArgs = { inherit nixpkgs agenix; theFlake = self; };
+    specialArgs = { inherit nixpkgs; theFlake = self; };
     modules = [ "${self.outPath}/m/${name}/configuration.nix" ];
   };
   # For now we only support x86

m/common/base/agenix.nix

@@ -1,9 +1,8 @@
-{ agenix, ... }:
+{ pkgs, ... }:
 
 {
-  imports = [ agenix.nixosModules.default ];
+  imports = [ ../../module/agenix.nix ];
 
-  environment.systemPackages = [
-    agenix.packages.x86_64-linux.default
-  ];
+  # Add agenix to system packages
+  environment.systemPackages = [ pkgs.agenix ];
 }

m/module/agenix.nix

@@ -0,0 +1,357 @@
+{
+  config,
+  options,
+  lib,
+  pkgs,
+  ...
+}:
+with lib;
+let
+  cfg = config.age;
+
+  isDarwin = lib.attrsets.hasAttrByPath [ "environment" "darwinConfig" ] options;
+
+  ageBin = config.age.ageBin;
+
+  users = config.users.users;
+
+  sysusersEnabled =
+    if isDarwin then
+      false
+    else
+      options.systemd ? sysusers && (config.systemd.sysusers.enable || config.services.userborn.enable);
+
+  mountCommand =
+    if isDarwin then
+      ''
+        if ! diskutil info "${cfg.secretsMountPoint}" &> /dev/null; then
+            num_sectors=1048576
+            dev=$(hdiutil attach -nomount ram://"$num_sectors" | sed 's/[[:space:]]*$//')
+            newfs_hfs -v agenix "$dev"
+            mount -t hfs -o nobrowse,nodev,nosuid,-m=0751 "$dev" "${cfg.secretsMountPoint}"
+        fi
+      ''
+    else
+      ''
+        grep -q "${cfg.secretsMountPoint} ramfs" /proc/mounts ||
+          mount -t ramfs none "${cfg.secretsMountPoint}" -o nodev,nosuid,mode=0751
+      '';
+  newGeneration = ''
+    _agenix_generation="$(basename "$(readlink ${cfg.secretsDir})" || echo 0)"
+    (( ++_agenix_generation ))
+    echo "[agenix] creating new generation in ${cfg.secretsMountPoint}/$_agenix_generation"
+    mkdir -p "${cfg.secretsMountPoint}"
+    chmod 0751 "${cfg.secretsMountPoint}"
+    ${mountCommand}
+    mkdir -p "${cfg.secretsMountPoint}/$_agenix_generation"
+    chmod 0751 "${cfg.secretsMountPoint}/$_agenix_generation"
+  '';
+
+  chownGroup = if isDarwin then "admin" else "keys";
+  # chown the secrets mountpoint and the current generation to the keys group
+  # instead of leaving it root:root.
+  chownMountPoint = ''
+    chown :${chownGroup} "${cfg.secretsMountPoint}" "${cfg.secretsMountPoint}/$_agenix_generation"
+  '';
+
+  setTruePath = secretType: ''
+    ${
+      if secretType.symlink then
+        ''
+          _truePath="${cfg.secretsMountPoint}/$_agenix_generation/${secretType.name}"
+        ''
+      else
+        ''
+          _truePath="${secretType.path}"
+        ''
+    }
+  '';
+
+  installSecret = secretType: ''
+    ${setTruePath secretType}
+    echo "decrypting '${secretType.file}' to '$_truePath'..."
+    TMP_FILE="$_truePath.tmp"
+
+    IDENTITIES=()
+    for identity in ${toString cfg.identityPaths}; do
+      test -r "$identity" || continue
+      test -s "$identity" || continue
+      IDENTITIES+=(-i)
+      IDENTITIES+=("$identity")
+    done
+
+    test "''${#IDENTITIES[@]}" -eq 0 && echo "[agenix] WARNING: no readable identities found!"
+
+    mkdir -p "$(dirname "$_truePath")"
+    [ "${secretType.path}" != "${cfg.secretsDir}/${secretType.name}" ] && mkdir -p "$(dirname "${secretType.path}")"
+    (
+      umask u=r,g=,o=
+      test -f "${secretType.file}" || echo '[agenix] WARNING: encrypted file ${secretType.file} does not exist!'
+      test -d "$(dirname "$TMP_FILE")" || echo "[agenix] WARNING: $(dirname "$TMP_FILE") does not exist!"
+      LANG=${
+        config.i18n.defaultLocale or "C"
+      } ${ageBin} --decrypt "''${IDENTITIES[@]}" -o "$TMP_FILE" "${secretType.file}"
+    )
+    chmod ${secretType.mode} "$TMP_FILE"
+    mv -f "$TMP_FILE" "$_truePath"
+
+    ${optionalString secretType.symlink ''
+      [ "${secretType.path}" != "${cfg.secretsDir}/${secretType.name}" ] && ln -sfT "${cfg.secretsDir}/${secretType.name}" "${secretType.path}"
+    ''}
+  '';
+
+  testIdentities = map (path: ''
+    test -f ${path} || echo '[agenix] WARNING: config.age.identityPaths entry ${path} not present!'
+  '') cfg.identityPaths;
+
+  cleanupAndLink = ''
+    _agenix_generation="$(basename "$(readlink ${cfg.secretsDir})" || echo 0)"
+    (( ++_agenix_generation ))
+    echo "[agenix] symlinking new secrets to ${cfg.secretsDir} (generation $_agenix_generation)..."
+    ln -sfT "${cfg.secretsMountPoint}/$_agenix_generation" ${cfg.secretsDir}
+
+    (( _agenix_generation > 1 )) && {
+    echo "[agenix] removing old secrets (generation $(( _agenix_generation - 1 )))..."
+    rm -rf "${cfg.secretsMountPoint}/$(( _agenix_generation - 1 ))"
+    }
+  '';
+
+  installSecrets = builtins.concatStringsSep "\n" (
+    [ "echo '[agenix] decrypting secrets...'" ]
+    ++ testIdentities
+    ++ (map installSecret (builtins.attrValues cfg.secrets))
+    ++ [ cleanupAndLink ]
+  );
+
+  chownSecret = secretType: ''
+    ${setTruePath secretType}
+    chown ${secretType.owner}:${secretType.group} "$_truePath"
+  '';
+
+  chownSecrets = builtins.concatStringsSep "\n" (
+    [ "echo '[agenix] chowning...'" ]
+    ++ [ chownMountPoint ]
+    ++ (map chownSecret (builtins.attrValues cfg.secrets))
+  );
+
+  secretType = types.submodule (
+    { config, ... }:
+    {
+      options = {
+        name = mkOption {
+          type = types.str;
+          default = config._module.args.name;
+          defaultText = literalExpression "config._module.args.name";
+          description = ''
+            Name of the file used in {option}`age.secretsDir`
+          '';
+        };
+        file = mkOption {
+          type = types.path;
+          description = ''
+            Age file the secret is loaded from.
+          '';
+        };
+        path = mkOption {
+          type = types.str;
+          default = "${cfg.secretsDir}/${config.name}";
+          defaultText = literalExpression ''
+            "''${cfg.secretsDir}/''${config.name}"
+          '';
+          description = ''
+            Path where the decrypted secret is installed.
+          '';
+        };
+        mode = mkOption {
+          type = types.str;
+          default = "0400";
+          description = ''
+            Permissions mode of the decrypted secret in a format understood by chmod.
+          '';
+        };
+        owner = mkOption {
+          type = types.str;
+          default = "0";
+          description = ''
+            User of the decrypted secret.
+          '';
+        };
+        group = mkOption {
+          type = types.str;
+          default = users.${config.owner}.group or "0";
+          defaultText = literalExpression ''
+            users.''${config.owner}.group or "0"
+          '';
+          description = ''
+            Group of the decrypted secret.
+          '';
+        };
+        symlink = mkEnableOption "symlinking secrets to their destination" // {
+          default = true;
+        };
+      };
+    }
+  );
+in
+{
+  imports = [
+    (mkRenamedOptionModule [ "age" "sshKeyPaths" ] [ "age" "identityPaths" ])
+  ];
+
+  options.age = {
+    ageBin = mkOption {
+      type = types.str;
+      default = "${pkgs.age}/bin/age";
+      defaultText = literalExpression ''
+        "''${pkgs.age}/bin/age"
+      '';
+      description = ''
+        The age executable to use.
+      '';
+    };
+    secrets = mkOption {
+      type = types.attrsOf secretType;
+      default = { };
+      description = ''
+        Attrset of secrets.
+      '';
+    };
+    secretsDir = mkOption {
+      type = types.path;
+      default = "/run/agenix";
+      description = ''
+        Folder where secrets are symlinked to
+      '';
+    };
+    secretsMountPoint = mkOption {
+      type =
+        types.addCheck types.str (
+          s:
+          (builtins.match "[ \t\n]*" s) == null # non-empty
+          && (builtins.match ".+/" s) == null
+        ) # without trailing slash
+        // {
+          description = "${types.str.description} (with check: non-empty without trailing slash)";
+        };
+      default = "/run/agenix.d";
+      description = ''
+        Where secrets are created before they are symlinked to {option}`age.secretsDir`
+      '';
+    };
+    identityPaths = mkOption {
+      type = types.listOf types.path;
+      default =
+        if isDarwin then
+          [
+            "/etc/ssh/ssh_host_ed25519_key"
+            "/etc/ssh/ssh_host_rsa_key"
+          ]
+        else if (config.services.openssh.enable or false) then
+          map (e: e.path) (
+            lib.filter (e: e.type == "rsa" || e.type == "ed25519") config.services.openssh.hostKeys
+          )
+        else
+          [ ];
+      defaultText = literalExpression ''
+        if isDarwin
+        then [
+          "/etc/ssh/ssh_host_ed25519_key"
+          "/etc/ssh/ssh_host_rsa_key"
+        ]
+        else if (config.services.openssh.enable or false)
+        then map (e: e.path) (lib.filter (e: e.type == "rsa" || e.type == "ed25519") config.services.openssh.hostKeys)
+        else [];
+      '';
+      description = ''
+        Path to SSH keys to be used as identities in age decryption.
+      '';
+    };
+  };
+
+  config = mkIf (cfg.secrets != { }) (mkMerge [
+    {
+      assertions = [
+        {
+          assertion = cfg.identityPaths != [ ];
+          message = "age.identityPaths must be set, for example by enabling openssh.";
+        }
+      ];
+    }
+    (optionalAttrs (!isDarwin) {
+      # When using sysusers we no longer be started as an activation script
+      # because those are started in initrd while sysusers is started later.
+      systemd.services.agenix-install-secrets = mkIf sysusersEnabled {
+        wantedBy = [ "sysinit.target" ];
+        after = [ "systemd-sysusers.service" ];
+        unitConfig.DefaultDependencies = "no";
+
+        path = [ pkgs.mount ];
+        serviceConfig = {
+          Type = "oneshot";
+          ExecStart = pkgs.writeShellScript "agenix-install" (concatLines [
+            newGeneration
+            installSecrets
+            chownSecrets
+          ]);
+          RemainAfterExit = true;
+        };
+      };
+
+      # Create a new directory full of secrets for symlinking (this helps
+      # ensure removed secrets are actually removed, or at least become
+      # invalid symlinks).
+      system.activationScripts = mkIf (!sysusersEnabled) {
+        agenixNewGeneration = {
+          text = newGeneration;
+          deps = [
+            "specialfs"
+          ];
+        };
+
+        agenixInstall = {
+          text = installSecrets;
+          deps = [
+            "agenixNewGeneration"
+            "specialfs"
+          ];
+        };
+
+        # So user passwords can be encrypted.
+        users.deps = [ "agenixInstall" ];
+
+        # Change ownership and group after users and groups are made.
+        agenixChown = {
+          text = chownSecrets;
+          deps = [
+            "users"
+            "groups"
+          ];
+        };
+
+        # So other activation scripts can depend on agenix being done.
+        agenix = {
+          text = "";
+          deps = [ "agenixChown" ];
+        };
+      };
+    })
+
+    (optionalAttrs isDarwin {
+      launchd.daemons.activate-agenix = {
+        script = ''
+          set -e
+          set -o pipefail
+          export PATH="${pkgs.gnugrep}/bin:${pkgs.coreutils}/bin:@out@/sw/bin:/usr/bin:/bin:/usr/sbin:/sbin"
+          ${newGeneration}
+          ${installSecrets}
+          ${chownSecrets}
+          exit 0
+        '';
+        serviceConfig = {
+          RunAtLoad = true;
+          KeepAlive.SuccessfulExit = false;
+        };
+      };
+    })
+  ]);
+}

overlay.nix

@@ -7,6 +7,7 @@ let
   callPackage = final.callPackage;
 
   bscPkgs = {
+    agenix = prev.callPackage ./pkgs/agenix/default.nix { };
     amd-uprof = prev.callPackage ./pkgs/amd-uprof/default.nix { };
     bench6 = callPackage ./pkgs/bench6/default.nix { };
     bigotes = callPackage ./pkgs/bigotes/default.nix { };

pkgs/agenix/agenix.sh

@@ -0,0 +1,212 @@
+#!/usr/bin/env bash
+set -Eeuo pipefail
+
+PACKAGE="agenix"
+
+function show_help () {
+  echo "$PACKAGE - edit and rekey age secret files"
+  echo " "
+  echo "$PACKAGE -e FILE [-i PRIVATE_KEY]"
+  echo "$PACKAGE -r [-i PRIVATE_KEY]"
+  echo ' '
+  echo 'options:'
+  echo '-h, --help                show help'
+  # shellcheck disable=SC2016
+  echo '-e, --edit FILE           edits FILE using $EDITOR'
+  echo '-r, --rekey               re-encrypts all secrets with specified recipients'
+  echo '-d, --decrypt FILE        decrypts FILE to STDOUT'
+  echo '-i, --identity            identity to use when decrypting'
+  echo '-v, --verbose             verbose output'
+  echo ' '
+  echo 'FILE an age-encrypted file'
+  echo ' '
+  echo 'PRIVATE_KEY a path to a private SSH key used to decrypt file'
+  echo ' '
+  echo 'EDITOR environment variable of editor to use when editing FILE'
+  echo ' '
+  echo 'If STDIN is not interactive, EDITOR will be set to "cp /dev/stdin"'
+  echo ' '
+  echo 'RULES environment variable with path to Nix file specifying recipient public keys.'
+  echo "Defaults to './secrets.nix'"
+  echo ' '
+  echo "agenix version: @version@"
+  echo "age binary path: @ageBin@"
+  echo "age version: $(@ageBin@ --version)"
+}
+
+function warn() {
+  printf '%s\n' "$*" >&2
+}
+
+function err() {
+  warn "$*"
+  exit 1
+}
+
+test $# -eq 0 && (show_help && exit 1)
+
+REKEY=0
+DECRYPT_ONLY=0
+DEFAULT_DECRYPT=(--decrypt)
+
+while test $# -gt 0; do
+  case "$1" in
+    -h|--help)
+      show_help
+      exit 0
+      ;;
+    -e|--edit)
+      shift
+      if test $# -gt 0; then
+        export FILE=$1
+      else
+        echo "no FILE specified"
+        exit 1
+      fi
+      shift
+      ;;
+    -i|--identity)
+      shift
+      if test $# -gt 0; then
+        DEFAULT_DECRYPT+=(--identity "$1")
+      else
+        echo "no PRIVATE_KEY specified"
+        exit 1
+      fi
+      shift
+      ;;
+    -r|--rekey)
+      shift
+      REKEY=1
+      ;;
+    -d|--decrypt)
+      shift
+      DECRYPT_ONLY=1
+      if test $# -gt 0; then
+        export FILE=$1
+      else
+        echo "no FILE specified"
+        exit 1
+      fi
+      shift
+      ;;
+    -v|--verbose)
+      shift
+      set -x
+      ;;
+    *)
+      show_help
+      exit 1
+      ;;
+  esac
+done
+
+RULES=${RULES:-./secrets.nix}
+function cleanup {
+    if [ -n "${CLEARTEXT_DIR+x}" ]
+    then
+        rm -rf -- "$CLEARTEXT_DIR"
+    fi
+    if [ -n "${REENCRYPTED_DIR+x}" ]
+    then
+        rm -rf -- "$REENCRYPTED_DIR"
+    fi
+}
+trap "cleanup" 0 2 3 15
+
+function keys {
+    (@nixInstantiate@ --json --eval --strict -E "(let rules = import $RULES; in rules.\"$1\".publicKeys)" | @jqBin@ -r .[]) || exit 1
+}
+
+function armor {
+    (@nixInstantiate@ --json --eval --strict -E "(let rules = import $RULES; in (builtins.hasAttr \"armor\" rules.\"$1\" && rules.\"$1\".armor))") || exit 1
+}
+
+function decrypt {
+    FILE=$1
+    KEYS=$2
+    if [ -z "$KEYS" ]
+    then
+        err "There is no rule for $FILE in $RULES."
+    fi
+
+    if [ -f "$FILE" ]
+    then
+        DECRYPT=("${DEFAULT_DECRYPT[@]}")
+        if [[ "${DECRYPT[*]}" != *"--identity"* ]]; then
+            if [ -f "$HOME/.ssh/id_rsa" ]; then
+                DECRYPT+=(--identity "$HOME/.ssh/id_rsa")
+            fi
+            if [ -f "$HOME/.ssh/id_ed25519" ]; then
+                DECRYPT+=(--identity "$HOME/.ssh/id_ed25519")
+            fi
+        fi
+        if [[ "${DECRYPT[*]}" != *"--identity"* ]]; then
+          err "No identity found to decrypt $FILE. Try adding an SSH key at $HOME/.ssh/id_rsa or $HOME/.ssh/id_ed25519 or using the --identity flag to specify a file."
+        fi
+
+        @ageBin@ "${DECRYPT[@]}" -- "$FILE" || exit 1
+    fi
+}
+
+function edit {
+    FILE=$1
+    KEYS=$(keys "$FILE") || exit 1
+    ARMOR=$(armor "$FILE") || exit 1
+
+    CLEARTEXT_DIR=$(@mktempBin@ -d)
+    CLEARTEXT_FILE="$CLEARTEXT_DIR/$(basename -- "$FILE")"
+    DEFAULT_DECRYPT+=(-o "$CLEARTEXT_FILE")
+
+    decrypt "$FILE" "$KEYS" || exit 1
+
+    [ ! -f "$CLEARTEXT_FILE" ] || cp -- "$CLEARTEXT_FILE" "$CLEARTEXT_FILE.before"
+
+    [ -t 0 ] || EDITOR='cp -- /dev/stdin'
+
+    $EDITOR "$CLEARTEXT_FILE"
+
+    if [ ! -f "$CLEARTEXT_FILE" ]
+    then
+      warn "$FILE wasn't created."
+      return
+    fi
+    [ -f "$FILE" ] && [ "$EDITOR" != ":" ] && @diffBin@ -q -- "$CLEARTEXT_FILE.before" "$CLEARTEXT_FILE" && warn "$FILE wasn't changed, skipping re-encryption." && return
+
+    ENCRYPT=()
+    if [[ "$ARMOR" == "true" ]]; then
+        ENCRYPT+=(--armor)
+    fi
+    while IFS= read -r key
+    do
+        if [ -n "$key" ]; then
+            ENCRYPT+=(--recipient "$key")
+        fi
+    done <<< "$KEYS"
+
+    REENCRYPTED_DIR=$(@mktempBin@ -d)
+    REENCRYPTED_FILE="$REENCRYPTED_DIR/$(basename -- "$FILE")"
+
+    ENCRYPT+=(-o "$REENCRYPTED_FILE")
+
+    @ageBin@ "${ENCRYPT[@]}" <"$CLEARTEXT_FILE" || exit 1
+
+    mkdir -p -- "$(dirname -- "$FILE")"
+
+    mv -f -- "$REENCRYPTED_FILE" "$FILE"
+}
+
+function rekey {
+    FILES=$( (@nixInstantiate@ --json --eval -E "(let rules = import $RULES; in builtins.attrNames rules)"  | @jqBin@ -r .[]) || exit 1)
+
+    for FILE in $FILES
+    do
+        warn "rekeying $FILE..."
+        EDITOR=: edit "$FILE"
+        cleanup
+    done
+}
+
+[ $REKEY -eq 1 ] && rekey && exit 0
+[ $DECRYPT_ONLY -eq 1 ] && DEFAULT_DECRYPT+=("-o" "-") && decrypt "${FILE}" "$(keys "$FILE")" && exit 0
+edit "$FILE" && cleanup && exit 0

pkgs/agenix/default.nix

@@ -0,0 +1,66 @@
+{
+  lib,
+  stdenv,
+  age,
+  jq,
+  nix,
+  mktemp,
+  diffutils,
+  replaceVars,
+  ageBin ? "${age}/bin/age",
+  shellcheck,
+}:
+let
+  bin = "${placeholder "out"}/bin/agenix";
+in
+stdenv.mkDerivation rec {
+  pname = "agenix";
+  version = "0.15.0";
+  src = replaceVars ./agenix.sh {
+    inherit ageBin version;
+    jqBin = "${jq}/bin/jq";
+    nixInstantiate = "${nix}/bin/nix-instantiate";
+    mktempBin = "${mktemp}/bin/mktemp";
+    diffBin = "${diffutils}/bin/diff";
+  };
+  dontUnpack = true;
+  doInstallCheck = true;
+  installCheckInputs = [ shellcheck ];
+  postInstallCheck = ''
+    shellcheck ${bin}
+    ${bin} -h | grep ${version}
+
+    test_tmp=$(mktemp -d 2>/dev/null || mktemp -d -t 'mytmpdir')
+    export HOME="$test_tmp/home"
+    export NIX_STORE_DIR="$test_tmp/nix/store"
+    export NIX_STATE_DIR="$test_tmp/nix/var"
+    mkdir -p "$HOME" "$NIX_STORE_DIR" "$NIX_STATE_DIR"
+    function cleanup {
+      rm -rf "$test_tmp"
+    }
+    trap "cleanup" 0 2 3 15
+
+    mkdir -p $HOME/.ssh
+    cp -r "${./example}" $HOME/secrets
+    chmod -R u+rw $HOME/secrets
+    (
+    umask u=rw,g=r,o=r
+    cp ${./example_keys/user1.pub} $HOME/.ssh/id_ed25519.pub
+    chown $UID $HOME/.ssh/id_ed25519.pub
+    )
+    (
+    umask u=rw,g=,o=
+    cp ${./example_keys/user1} $HOME/.ssh/id_ed25519
+    chown $UID $HOME/.ssh/id_ed25519
+    )
+
+    cd $HOME/secrets
+    test $(${bin} -d secret1.age) = "hello"
+  '';
+
+  installPhase = ''
+    install -D $src ${bin}
+  '';
+
+  meta.description = "age-encrypted secrets for NixOS";
+}

pkgs/agenix/example/-leading-hyphen-filename.age

@@ -0,0 +1,7 @@
+age-encryption.org/v1
+-> ssh-ed25519 V3XmEA zirqdzZZ1E+sedBn7fbEHq4ntLEkokZ4GctarBBOHXY
+Rvs5YHaAUeCZyNwPedubPcHClWYIuXXWA5zadXPWY6w
+-> ssh-ed25519 KLPP8w BVp4rDkOYSQyn8oVeHFeinSqW+pdVtxBF9+5VM1yORY
+bMwppAi8Nhz0328taU4AzUkTVyWtSLvFZG6c5W/Fs78
+--- xCbqLhXAcOziO2wmbjTiSQfZvt5Rlsc4SCvF+iEzpQA
+<EFBFBD>KB<EFBFBD><EFBFBD>/<2F>Z<><5A>r<EFBFBD>%
<01><>4<EFBFBD><34><EFBFBD>Mq5<71><35>_<EFBFBD><5F>ݒ<><DD92><EFBFBD><EFBFBD><EFBFBD>11ܨqM;& <20><>Lr<4C><72><EFBFBD>f<EFBFBD><66><EFBFBD>]>N

pkgs/agenix/example/armored-secret.age

@@ -0,0 +1,7 @@
+-----BEGIN AGE ENCRYPTED FILE-----
+YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IHNzaC1lZDI1NTE5IFYzWG1FQSBpZkZW
+aFpLNnJxc0VUMHRmZ2dZS0pjMGVENnR3OHd5K0RiT1RjRUhibFZBCnN5UG5vUjA3
+SXpsNGtiVUw4T0tIVFo5Wkk5QS9NQlBndzVvektiQ0ozc0kKLS0tIGxyY1Q4dEZ1
+VGZEanJyTFNta2JNRmpZb2FnK2JyS1hSVml1UGdMNWZKQXMKYla+wTXcRedyZoEb
+LVWaSx49WoUTU0KBPJg9RArxaeC23GoCDzR/aM/1DvYU
+-----END AGE ENCRYPTED FILE-----

pkgs/agenix/example/passwordfile-user1.age

@@ -0,0 +1,9 @@
+age-encryption.org/v1
+-> ssh-ed25519 KLPP8w s1DYZRlZuSsyhmZCF1lFB+E9vB8bZ/+ZhBRlx8nprwE
+nmYVCsVBrX2CFXXPU+D+bbkkIe/foofp+xoUrg9DHZw
+-> ssh-ed25519 V3XmEA Pwv3oCwcY0DX8rY48UNfsj9RumWsn4dbgorYHCwObgI
+FKxRYkL3JHtJxUwymWDF0rAtJ33BivDI6IfPsfumM90
+-> V'v(/u$-grease em/Vgf 2qDuk
+7I3iiQLPGi1COML9u/JeYkr7EqbSLoU
+--- 57WJRigUGtmcObrssS3s4PvmR8wgh1AOC/ijJn1s3xI
+<EFBFBD>'K<>ƷY&<26>7G<37>O<EFBFBD><4F>Fj
<13>k<EFBFBD>X<EFBFBD><58>BnuJ<75><4A>:9<>(<><7F><EFBFBD>X<EFBFBD>#<23>A<EFBFBD><41><EFBFBD><EFBFBD>ڧj<DAA7>,<02>_<17><><EFBFBD>?<3F>Z<EFBFBD><17>v<EFBFBD><76>V<EFBFBD>96]oks~%<25>c	<04>e^C<>%JQ5<51><H<>z}<7D>C<EFBFBD>,<2C>p<EFBFBD><70>*!W<><57><EFBFBD>A<EFBFBD><41><EFBFBD>҅dC<15>K)<10><>-<2D>y

pkgs/agenix/example/secret2.age

@@ -0,0 +1,5 @@
+age-encryption.org/v1
+-> ssh-ed25519 V3XmEA OB4+1FbPhQ3r6iGksM7peWX5it8NClpXIq/o5nnP7GA
+FmHVUj+A5i5+bDFgySQskmlvynnosJiWUTJmBRiNA9I
+--- tP+3mFVtd7ogVu1Lkboh55zoi5a77Ht08Uc/QuIviv4
+<EFBFBD><EFBFBD>X<EFBFBD>{<7B><>O<EFBFBD><4F><1F><04>tMXx<58>vӪ(<28>I<EFBFBD>myP<79><50><EFBFBD><EFBFBD>+3<>S3i

pkgs/agenix/example/secrets.nix

@@ -0,0 +1,23 @@
+let
+  user1 = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIL0idNvgGiucWgup/mP78zyC23uFjYq0evcWdjGQUaBH";
+  system1 = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPJDyIr/FSz1cJdcoW69R+NrWzwGK/+3gJpqD1t8L2zE";
+in
+{
+  "secret1.age".publicKeys = [
+    user1
+    system1
+  ];
+  "secret2.age".publicKeys = [ user1 ];
+  "passwordfile-user1.age".publicKeys = [
+    user1
+    system1
+  ];
+  "-leading-hyphen-filename.age".publicKeys = [
+    user1
+    system1
+  ];
+  "armored-secret.age" = {
+    publicKeys = [ user1 ];
+    armor = true;
+  };
+}

pkgs/agenix/example_keys/system1

@@ -0,0 +1,7 @@
+-----BEGIN OPENSSH PRIVATE KEY-----
+b3BlbnNzaC1rZXktdjEAAAAABG5vbmUAAAAEbm9uZQAAAAAAAAABAAAAMwAAAAtzc2gtZW
+QyNTUxOQAAACDyQ8iK/xUs9XCXXKFuvUfja1s8Biv/t4Caag9bfC9sxAAAAJA3yvCWN8rw
+lgAAAAtzc2gtZWQyNTUxOQAAACDyQ8iK/xUs9XCXXKFuvUfja1s8Biv/t4Caag9bfC9sxA
+AAAEA+J2V6AG1NriAIvnNKRauIEh1JE9HSdhvKJ68a5Fm0w/JDyIr/FSz1cJdcoW69R+Nr
+WzwGK/+3gJpqD1t8L2zEAAAADHJ5YW50bUBob21lMQE=
+-----END OPENSSH PRIVATE KEY-----

pkgs/agenix/example_keys/system1.pub

@@ -0,0 +1 @@
+ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPJDyIr/FSz1cJdcoW69R+NrWzwGK/+3gJpqD1t8L2zE

pkgs/agenix/example_keys/user1

@@ -0,0 +1,7 @@
+-----BEGIN OPENSSH PRIVATE KEY-----
+b3BlbnNzaC1rZXktdjEAAAAABG5vbmUAAAAEbm9uZQAAAAAAAAABAAAAMwAAAAtzc2gtZW
+QyNTUxOQAAACC9InTb4BornFoLqf5j+/M8gtt7hY2KtHr3FnYxkFGgRwAAAJC2JJ8htiSf
+IQAAAAtzc2gtZWQyNTUxOQAAACC9InTb4BornFoLqf5j+/M8gtt7hY2KtHr3FnYxkFGgRw
+AAAEDxt5gC/s53IxiKAjfZJVCCcFIsdeERdIgbYhLO719+Kb0idNvgGiucWgup/mP78zyC
+23uFjYq0evcWdjGQUaBHAAAADHJ5YW50bUBob21lMQE=
+-----END OPENSSH PRIVATE KEY-----

pkgs/agenix/example_keys/user1.pub

@@ -0,0 +1 @@
+ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIL0idNvgGiucWgup/mP78zyC23uFjYq0evcWdjGQUaBH

pkgs/agenix/update.sh

@@ -0,0 +1,23 @@
+#!/bin/sh
+
+set -e
+
+# All operations are done relative to root
+GITROOT=$(git rev-parse --show-toplevel)
+cd "$GITROOT"
+
+REVISION=${1:-main}
+
+TMPCLONE=$(mktemp -d)
+trap "rm -rf ${TMPCLONE}" EXIT
+
+git clone https://github.com/ryantm/agenix.git --revision="$REVISION" "$TMPCLONE" --depth=1
+
+cp "${TMPCLONE}/pkgs/agenix.sh" pkgs/agenix/agenix.sh
+cp "${TMPCLONE}/pkgs/agenix.nix" pkgs/agenix/default.nix
+sed -i 's#../example#./example#' pkgs/agenix/default.nix
+
+cp "${TMPCLONE}/example/"* pkgs/agenix/example/
+cp "${TMPCLONE}/example_keys/"* pkgs/agenix/example_keys/
+
+cp "${TMPCLONE}/modules/age.nix" m/module/agenix.nix