Add fetchGitMirror function

Avoids adding an extra flake input only to fetch a single module and
package.

Reviewed-by: Aleix Boné <abonerib@bsc.es>
Tested-by: Rodrigo Arias Mallo <rodrigo.arias@bsc.es>

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 = [
+  # Add agenix to system packages
-    agenix.packages.x86_64-linux.default
+  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

@@ -1,12 +1,14 @@
 final: /* Future last stage */
 prev:  /* Previous stage */
 
-with final.lib;
+#with final.lib;
 
 let
+  lib = prev.lib;
   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 { };
@@ -35,6 +37,7 @@ let
     mpich = callPackage ./pkgs/mpich/default.nix { mpich = prev.mpich; };
     nanos6 = callPackage ./pkgs/nanos6/default.nix { };
     nanos6Debug = final.nanos6.override { enableDebug = true; };
+    nix = callPackage ./pkgs/nix/default.nix { nix = prev.nix; };
     nixtools = callPackage ./pkgs/nixtools/default.nix { };
     # Broken because of pkgsStatic.libcap
     # See: https://github.com/NixOS/nixpkgs/pull/268791
@@ -94,15 +97,18 @@ let
     };
   };
 
+  # Load our custom lib functions with import, callPackage fails.
+  lib' = import ./pkgs/lib.nix { lib = prev.lib; };
+
   # For now, only build toplevel packages in CI/Hydra
-  pkgsTopLevel = filterAttrs (_: isDerivation) bscPkgs;
+  pkgsTopLevel = lib.filterAttrs (_: lib.isDerivation) bscPkgs;
 
   # Native build in that platform doesn't imply cross build works
   canCrossCompile = platform: pkg:
-    (isDerivation pkg) &&
+    (lib.isDerivation pkg) &&
     # Must be defined explicitly
     (pkg.meta.cross or false) &&
-    (meta.availableOn platform pkg);
+    (lib.meta.availableOn platform pkg);
 
   # For now only RISC-V
   crossSet = { riscv64 = final.pkgsCross.riscv64.bsc.pkgsTopLevel; };
@@ -120,21 +126,17 @@ let
     '';
 
   pkgsList = buildList "ci-pkgs" (builtins.attrValues pkgsTopLevel);
-  testsList = buildList "ci-tests" (collect isDerivation tests);
+  testsList = buildList "ci-tests" (lib.collect lib.isDerivation tests);
   allList = buildList' "ci-all" [ pkgsList testsList ];
   # For now only RISC-V
   crossList = buildList "ci-cross"
-    (filter
+    (lib.filter
       (canCrossCompile final.pkgsCross.riscv64.stdenv.hostPlatform)
         (builtins.attrValues crossSet.riscv64));
 
 in bscPkgs // {
 
-  lib = prev.lib // {
+  lib = lib';
-    maintainers = prev.lib.maintainers // {
-      bsc = import ./pkgs/maintainers.nix;
-    };
-  };
 
   # Prevent accidental usage of bsc-ci attribute
   bsc-ci = throw "the bsc-ci attribute is deprecated, use bsc.ci";

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
+ôKB£î/²ZÅÈrÙ%
¾à4¡´—Mq5×Ô_ÌÂÝ’‹†ã„Ò11ܨqM;& ¢‡LríÂÒføû”]>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©Æ·Y&‘7GÆOÝòFj
±kÆXç«BnuJöê:9Ê(’ÙÏX¬#¼AíÄÞÃÚ§j’,ê_ÈþÝ?ÝZ“¥vœ¹V’96]oks~%£c	Îe^CÅ%JQ5€<H¢z}îCý,°pŒ¿*!W§§ÈA±º­Ò…dC¼K)¿¢-žy

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
+¤¬Xæ{”ïOŠ£èätMXxÔvÓª(¬IÁmyPÇï¸è+3²S3i

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

pkgs/bench6/default.nix

@@ -14,16 +14,19 @@
 , openblas
 , ovni
 , gitBranch ? "master"
-, gitURL ? "ssh://git@bscpm04.bsc.es/rarias/bench6.git"
 , gitCommit ? "bf29a53113737c3aa74d2fe3d55f59868faea7b4"
+, gitUrls ? [
+  "ssh://git@bscpm04.bsc.es/rarias-ksadfkdf/bench6.git"
+  "https://github.lll.com/rodarima-sdfsd/bench6.git"
+]
 }:
 
 stdenv.mkDerivation rec {
   pname = "bench6";
   version = "${src.shortRev}";
 
-  src = builtins.fetchGit {
+  src = lib.fetchGitMirror {
-    url = gitURL;
+    urls = gitUrls;
     ref = gitBranch;
     rev = gitCommit;
   };

pkgs/lib.nix

@@ -0,0 +1,30 @@
+{ lib }:
+
+let
+  # If not supported, fall back to tryEval, which will fail in the first case.
+  safeCatchAll = if (builtins ? catchAll)
+    then builtins.catchAll
+    else e: (builtins.tryEval e) // { msg = ""; };
+in lib.extend (_: lib: {
+  # Same as fetchGit but accepts a list of mirror urls
+  fetchGitMirror = { urls, ... } @ args:
+  let
+    cleanArgs = lib.removeAttrs args [ "urls" ];
+    fetchUrl = url: builtins.fetchGit (cleanArgs // { inherit url; });
+    safeFetch = url: safeCatchAll (fetchUrl url);
+    complain = url:
+    let
+      r = safeFetch url;
+    in
+      if (r.success) then r
+      else lib.warn "cannot fetch ${url}, trying next
+      mirror:${builtins.replaceStrings ["\n" ] ["\n> "] ("\n"+r.msg)}" r;
+    fetchList = lib.map (url: complain url) urls;
+    bad = throw "cannot fetch from any mirror";
+    good = lib.findFirst (e: e.success) bad fetchList;
+  in good.value;
+
+  maintainers = lib.maintainers // {
+    bsc = import ./maintainers.nix;
+  };
+})

pkgs/nix/add-catchAll.patch

@@ -0,0 +1,64 @@
+From 3aa73c21e3afc91522a6121b0d591af6925b4ba6 Mon Sep 17 00:00:00 2001
+From: Rodrigo Arias Mallo <rodarima@gmail.com>
+Date: Mon, 13 Oct 2025 16:05:30 +0200
+Subject: [PATCH] Add builtins.catchAll to catch all types of errors
+
+Allows fetching multiple Git repositories with builtin.fetchGit and
+catching any errors thrown by the builtin, in opposition to the builtin
+tryEval.
+---
+ src/libexpr/primops.cc | 38 ++++++++++++++++++++++++++++++++++++++
+ 1 file changed, 38 insertions(+)
+
+diff --git a/src/libexpr/primops.cc b/src/libexpr/primops.cc
+index 36a67a39d..3b26f9f43 100644
+--- a/src/libexpr/primops.cc
++++ b/src/libexpr/primops.cc
+@@ -849,6 +849,44 @@ static RegisterPrimOp primop_tryEval({
+     .fun = prim_tryEval,
+ });
+ 
++/* Like tryEval but catch all errors. Success => {success=true; value=something;},
++ * else => {success=false; value=false;} */
++static void prim_catchAll(EvalState & state, const PosIdx pos, Value * * args, Value & v)
++{
++    auto attrs = state.buildBindings(3);
++    try {
++        state.forceValue(*args[0], pos);
++        attrs.insert(state.sValue, args[0]);
++        attrs.alloc("success").mkBool(true);
++        attrs.alloc("msg").mkNull();
++    } catch (Error & e) {
++        attrs.alloc(state.sValue).mkBool(false);
++        attrs.alloc("success").mkBool(false);
++        attrs.alloc("msg").mkString(e.msg());
++    }
++    v.mkAttrs(attrs);
++}
++
++static RegisterPrimOp primop_catchAll({
++    .name = "__catchAll",
++    .args = {"e"},
++    .doc = R"(
++      Try to shallowly evaluate *e*. Return a set containing the
++      attributes `success` (`true` if *e* evaluated successfully,
++      `false` if an error was thrown) and `value`, equalling *e* if
++      successful and `false` otherwise. In contrast with `tryEval`,
++      `catchAll` will prevent all errors from being thrown, including
++      for those created by `abort` and type errors generated by
++      builtins. Also note that this doesn't evaluate *e* deeply, so
++      `let e = { x = throw ""; }; in (builtins.catchAll e).success`
++      will be `true`. Using `builtins.deepSeq` one can get the expected
++      result: `let e = { x = throw ""; }; in
++      (builtins.catchAll (builtins.deepSeq e e)).success` will be
++      `false`.
++    )",
++    .fun = prim_catchAll,
++});
++
+ /* Return an environment variable.  Use with care. */
+ static void prim_getEnv(EvalState & state, const PosIdx pos, Value * * args, Value & v)
+ {
+-- 
+2.51.0
+

pkgs/nix/default.nix

@@ -1,219 +1,7 @@
-{ lib, fetchurl, fetchFromGitHub, callPackage
+{ nix }:
-, storeDir ? "/nix/store"
-, stateDir ? "/nix/var"
-, confDir ? "/etc"
-, boehmgc
-, stdenv, llvmPackages_6
-}:
 
-let
+nix.overrideAttrs (old: {
-
+  patches = (old.patches or []) ++ [
-common =
+    ./add-catchAll.patch
-  { lib, stdenv, fetchpatch, perl, curl, bzip2, sqlite, openssl ? null, xz
-  , bash, coreutils, gzip, gnutar
-  , pkg-config, boehmgc, perlPackages, libsodium, brotli, boost, editline, nlohmann_json
-  , autoreconfHook, autoconf-archive, bison, flex, libxml2, libxslt, docbook5, docbook_xsl_ns
-  , jq, libarchive, rustc, cargo
-  # Used by tests
-  , gmock
-  , busybox-sandbox-shell
-  , storeDir
-  , stateDir
-  , confDir
-  , withLibseccomp ? lib.any (lib.meta.platformMatch stdenv.hostPlatform) libseccomp.meta.platforms, libseccomp
-  , withAWS ? stdenv.isLinux || stdenv.isDarwin, aws-sdk-cpp
-
-  , name, suffix ? "", src, crates ? null
-
-  }:
-  let
-     sh = busybox-sandbox-shell;
-     nix = stdenv.mkDerivation rec {
-      inherit name src;
-      version = lib.getVersion name;
-
-      is24 = lib.versionAtLeast version "2.4pre";
-      isExactly23 = lib.versionAtLeast version "2.3" && lib.versionOlder version "2.4";
-
-      VERSION_SUFFIX = suffix;
-
-      outputs = [ "out" "dev" "man" "doc" ];
-
-      nativeBuildInputs =
-        [ pkg-config ]
-        ++ lib.optionals is24 [ autoreconfHook autoconf-archive bison flex libxml2 libxslt
-                                docbook5 docbook_xsl_ns jq gmock ];
-
-      buildInputs =
-        [ curl openssl sqlite xz bzip2 nlohmann_json
-          brotli boost editline
-        ]
-        ++ lib.optional (stdenv.isLinux || stdenv.isDarwin) libsodium
-        ++ lib.optionals is24 [ libarchive rustc cargo ]
-        ++ lib.optional withLibseccomp libseccomp
-        ++ lib.optional withAWS
-            ((aws-sdk-cpp.override {
-              apis = ["s3" "transfer"];
-              customMemoryManagement = false;
-            }).overrideDerivation (args: {
-              patches = args.patches or [] ++ [(fetchpatch {
-                url = "https://github.com/edolstra/aws-sdk-cpp/commit/7d58e303159b2fb343af9a1ec4512238efa147c7.patch";
-                sha256 = "103phn6kyvs1yc7fibyin3lgxz699qakhw671kl207484im55id1";
-              })];
-            }));
-
-      propagatedBuildInputs = [ boehmgc ];
-
-      # Seems to be required when using std::atomic with 64-bit types
-      NIX_LDFLAGS = lib.optionalString (stdenv.hostPlatform.system == "armv5tel-linux" || stdenv.hostPlatform.system == "armv6l-linux") "-latomic";
-
-      preConfigure =
-        # Copy libboost_context so we don't get all of Boost in our closure.
-        # https://github.com/NixOS/nixpkgs/issues/45462
-        ''
-          mkdir -p $out/lib
-          cp -pd ${boost}/lib/{libboost_context*,libboost_thread*,libboost_system*} $out/lib
-          rm -f $out/lib/*.a
-          ${lib.optionalString stdenv.isLinux ''
-            chmod u+w $out/lib/*.so.*
-            patchelf --set-rpath $out/lib:${stdenv.cc.cc.lib}/lib $out/lib/libboost_thread.so.*
-          ''}
-        '' +
-        # Unpack the Rust crates.
-        lib.optionalString is24 ''
-          tar xvf ${crates} -C nix-rust/
-          mv nix-rust/nix-vendored-crates* nix-rust/vendor
-        '' +
-        # For Nix-2.3, patch around an issue where the Nix configure step pulls in the
-        # build system's bash and other utilities when cross-compiling
-        lib.optionalString (stdenv.buildPlatform != stdenv.hostPlatform && isExactly23) ''
-          mkdir tmp/
-          substitute corepkgs/config.nix.in tmp/config.nix.in \
-            --subst-var-by bash ${bash}/bin/bash \
-            --subst-var-by coreutils ${coreutils}/bin \
-            --subst-var-by bzip2 ${bzip2}/bin/bzip2 \
-            --subst-var-by gzip ${gzip}/bin/gzip \
-            --subst-var-by xz ${xz}/bin/xz \
-            --subst-var-by tar ${gnutar}/bin/tar \
-            --subst-var-by tr ${coreutils}/bin/tr
-          mv tmp/config.nix.in corepkgs/config.nix.in
-          '';
-
-      configureFlags =
-        [ "--with-store-dir=${storeDir}"
-          "--localstatedir=${stateDir}"
-          "--sysconfdir=${confDir}"
-          "--disable-init-state"
-          "--enable-gc"
-        ]
-        ++ lib.optionals stdenv.isLinux [
-          "--with-sandbox-shell=${sh}/bin/busybox"
-        ]
-        ++ lib.optional (
-            stdenv.hostPlatform != stdenv.buildPlatform && stdenv.hostPlatform ? nix && stdenv.hostPlatform.nix ? system
-        ) ''--with-system=${stdenv.hostPlatform.nix.system}''
-           # RISC-V support in progress https://github.com/seccomp/libseccomp/pull/50
-        ++ lib.optional (!withLibseccomp) "--disable-seccomp-sandboxing";
-
-      makeFlags = [ "profiledir=$(out)/etc/profile.d" ];
-
-      installFlags = [ "sysconfdir=$(out)/etc" ];
-
-      doInstallCheck = false;
-
-      # socket path becomes too long otherwise
-      #preInstallCheck = lib.optional stdenv.isDarwin ''
-      #  export TMPDIR=$NIX_BUILD_TOP
-      #'';
-
-      separateDebugInfo = stdenv.isLinux;
-
-      enableParallelBuilding = true;
-
-      meta = {
-        description = "Powerful package manager that makes package management reliable and reproducible";
-        longDescription = ''
-          Nix is a powerful package manager for Linux and other Unix systems that
-          makes package management reliable and reproducible. It provides atomic
-          upgrades and rollbacks, side-by-side installation of multiple versions of
-          a package, multi-user package management and easy setup of build
-          environments.
-        '';
-        homepage = "https://nixos.org/";
-        license = lib.licenses.lgpl2Plus;
-        maintainers = [ lib.maintainers.eelco ];
-        platforms = lib.platforms.unix;
-        outputsToInstall = [ "out" "man" ];
-      };
-
-      passthru = {
-        perl-bindings = stdenv.mkDerivation {
-          pname = "nix-perl";
-          inherit version;
-
-          inherit src;
-
-          postUnpack = "sourceRoot=$sourceRoot/perl";
-
-          # This is not cross-compile safe, don't have time to fix right now
-          # but noting for future travellers.
-          nativeBuildInputs =
-            [ perl pkg-config curl nix libsodium boost autoreconfHook autoconf-archive ];
-
-          configureFlags =
-            [ "--with-dbi=${perlPackages.DBI}/${perl.libPrefix}"
-              "--with-dbd-sqlite=${perlPackages.DBDSQLite}/${perl.libPrefix}"
   ];
-
+})
-          preConfigure = "export NIX_STATE_DIR=$TMPDIR";
-
-          preBuild = "unset NIX_INDENT_MAKE";
-        };
-      };
-    };
-  in nix;
-
-in rec {
-
-  nix = nixUnstable;
-
-  nixUnstable = lib.lowPrio (callPackage common rec {
-    name = "nix-2.4${suffix}";
-    suffix = "pre7534_b92f58f6";
-
-    #src = /home/Computational/rarias/nix/nix-rodarima;
-    src = fetchFromGitHub {
-      owner = "rodarima";
-      repo = "nix";
-      rev = "3a642187c33ed46d952d3a50a83b2576b704fab7";
-      sha256 = "0s8is2czpkcj1x1kcjqgbnsbbl03w3fwjjiclsd44zh1ij3wb90s";
-    };
-
-    crates = fetchurl {
-      url = "https://hydra.nixos.org/build/118797694/download/1/nix-vendored-crates-2.4pre7534_b92f58f6.tar.xz";
-      sha256 = "a4c2612bbd81732bbb899bc0c230e07b16f6b6150ffbb19c4907dedbbc2bf9fc";
-    };
-
-    inherit storeDir stateDir confDir boehmgc;
-  });
-
-  nixFlakes = lib.lowPrio (callPackage common rec {
-    name = "nix-2.4${suffix}";
-    suffix = "pre20200521_00b562c";
-
-    src = fetchFromGitHub {
-      owner = "NixOS";
-      repo = "nix";
-      rev = "00b562c87ec4c3bbe514f5dc1f4d1c41f66f66bf";
-      sha256 = "0s8is2czpkcj1x1kcjqgbnsbbl03w3fwjjiclsd44zh1ij3wb90s";
-    };
-
-    crates = fetchurl {
-      url = "https://hydra.nixos.org/build/118093786/download/1/nix-vendored-crates-2.4pre20200501_941f952.tar.xz";
-      sha256 = "060f4n5srdbb8vsj0m14aqch7im79a4h5g3nrs41p1xc602vhcdl";
-    };
-
-    inherit storeDir stateDir confDir boehmgc;
-  });
-
-}