diff --git a/.gitignore b/.gitignore
index 525b0b8..d7ae60c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
 .direnv/
+.dev/
 result/
 .DS_Store
 rust/target
diff --git a/nix/packages/mx-aliases-devenv-up/default.nix b/nix/packages/mx-aliases-devenv-up/default.nix
new file mode 100644
index 0000000..2e7a6eb
--- /dev/null
+++ b/nix/packages/mx-aliases-devenv-up/default.nix
@@ -0,0 +1,80 @@
+{
+  pkgs,
+  lib,
+  ...
+}:
+let
+  mock-oidc-provider = pkgs.stdenvNoCC.mkDerivation (finalAttrs: {
+    pname = "mock-oidc-provider";
+    version = "0.1.1";
+    src = pkgs.fetchFromGitHub {
+      owner = "bluecatengineering";
+      repo = "mock-oidc-provider";
+      tag = "v${finalAttrs.version}";
+      hash = "sha256-kGS8/4b/RuxUjr+GOeDXl2RCkBTu50gBdrrFwRhvRXE=";
+    };
+    npmDeps = pkgs.fetchNpmDeps {
+      inherit (finalAttrs) src;
+      hash = "sha256-f+ZjL1sCcyFewKOCX54sHAv5TUBx6LiWZUhnSpY2t0I=";
+    };
+    nativeBuildInputs = [
+      pkgs.npmHooks.npmConfigHook
+      pkgs.npmHooks.npmInstallHook
+      pkgs.nodejs
+    ];
+
+    postInstall = ''
+      mkdir -p $out/bin
+      echo -e "#!${lib.getExe pkgs.bash}\nexec ${lib.getExe' pkgs.nodejs "node"} $out/lib/node_modules/@bluecateng/mock-oidc-provider/src/server.js" > $out/bin/mock-oidc-provider
+      chmod +x $out/bin/mock-oidc-provider
+    '';
+  });
+  start-postgres = pkgs.writeShellApplication {
+    name = "start-postgres";
+    runtimeInputs = [
+      pkgs.postgresql
+      pkgs.uutils-coreutils-noprefix
+      pkgs.khscodes.find-flake-root
+    ];
+    text = ''
+      flake_root=$(find-flake-root)
+      PGDATA="$flake_root/.dev/mx-aliases/postgresql"
+      export PGDATA
+      PGPORT=55432
+      export PGPORT
+      PGHOST=127.0.0.1
+      export PGHOST
+
+      if [[ ! -d "$PGDATA" ]]; then
+        initdb --locale=C --encoding=UTF8
+        cp ${./postgresql.conf} "$PGDATA/postgresql.conf"
+        cp ${./pg_hba.conf} "$PGDATA/pg_hba.conf"
+        pg_ctl -D "$PGDATA" -w start -o "-c unix_socket_directories= -c listen_addresses=127.0.0.1,::1 -p 55432"
+        trap 'pg_ctl -D "$PGDATA" -m fast -w stop' EXIT
+        psql --dbname postgres < ${./init.sql}
+        pg_ctl -D "$PGDATA" -m fast -w stop
+        trap - EXIT
+      fi
+      exec postgres
+    '';
+  };
+in
+pkgs.writeShellApplication {
+  name = "mx-aliases-devenv-up";
+  runtimeInputs = [
+    start-postgres
+    mock-oidc-provider
+  ];
+  text = ''
+    trap 'kill "$pg" > /dev/null 2> /dev/null || true; kill "$oidc" > /dev/null 2> /dev/null || true' EXIT
+    start-postgres &
+    pg=$!
+
+    mock-oidc-provider &
+    oidc=$!
+
+
+    wait -n
+    wait -n
+  '';
+}
diff --git a/nix/packages/mx-aliases-devenv-up/init.sql b/nix/packages/mx-aliases-devenv-up/init.sql
new file mode 100644
index 0000000..3549185
--- /dev/null
+++ b/nix/packages/mx-aliases-devenv-up/init.sql
@@ -0,0 +1,3 @@
+CREATE ROLE postgres SUPERUSER;
+CREATE ROLE "mx-aliases";
+CREATE DATABASE "mx-aliases" WITH OWNER "mx-aliases";
diff --git a/nix/packages/mx-aliases-devenv-up/pg_hba.conf b/nix/packages/mx-aliases-devenv-up/pg_hba.conf
new file mode 100644
index 0000000..de846cf
--- /dev/null
+++ b/nix/packages/mx-aliases-devenv-up/pg_hba.conf
@@ -0,0 +1,3 @@
+# TYPE        DATABASE            USER       ADDRESS          METHOD
+  host        all                 all        127.0.0.1/32     trust
+  host        all                 all        ::1/128         trust
diff --git a/nix/packages/mx-aliases-devenv-up/postgresql.conf b/nix/packages/mx-aliases-devenv-up/postgresql.conf
new file mode 100644
index 0000000..16a4714
--- /dev/null
+++ b/nix/packages/mx-aliases-devenv-up/postgresql.conf
@@ -0,0 +1,3 @@
+listen_addresses='127.0.0.1,::1'
+port = 55432
+unix_socket_directories=''
diff --git a/nix/shells/default/default.nix b/nix/shells/default/default.nix
index 9473286..47202e9 100644
--- a/nix/shells/default/default.nix
+++ b/nix/shells/default/default.nix
@@ -8,6 +8,7 @@ mkShell {
   packages = [
     pkgs.nixd
     pkgs.nixfmt-rfc-style
+    pkgs.khscodes.mx-aliases-devenv-up
   ]
   ++ (lib.khscodes.mkRust pkgs "${inputs.self}/rust").devDeps
   ++ (import "${inputs.self}/mx-aliases" {