From 5382e74a25799db24331cacbe02e6abb354f9ecd Mon Sep 17 00:00:00 2001
From: xenia <xenia.agda@gmail.com>
Date: Tue, 8 Aug 2023 17:24:46 +0200
Subject: [PATCH] Postgres, initialize in mkShell

---
 flake.nix | 20 +++++++++++++++++---
 1 file changed, 17 insertions(+), 3 deletions(-)

diff --git a/flake.nix b/flake.nix
index 73ca80f..36ef148 100644
--- a/flake.nix
+++ b/flake.nix
@@ -11,11 +11,25 @@
       let pkgs = nixpkgs.legacyPackages.${system};
       in rec {
         packages = rec {
-          hello = pkgs.hello;
-          default = hello;
+          postgres = pkgs.postgresql_15_jit;
+
+          default = pkgs.hello;
         };
         devShells.default = pkgs.mkShell {
-          packages = [ packages.default ];
+          packages = [ packages.default packages.postgres ];
+          shellHook = ''
+            set -e
+            [ -d ./matabas-db ] || pg_ctl initdb --pgdata=./matabas-db
+            mkdir -p ./matabas-db/socket
+
+            [ -f matabas-db/matabas.log ] && mv -f matabas-db/matabas.log{,.old}
+            pg_ctl start --pgdata=./matabas-db --log=./matabas-db/matabas.log --options="-p 2137"
+            trap 'pg_ctl stop --pgdata=./matabas-db' EXIT
+
+            createdb -p 2137 matabas || : 3
+
+            set +e
+          '';
         };
       }
     ) // {