Use Poetry and start and instance of PostgreSQL

pyproject.toml

@@ -0,0 +1,28 @@
+[tool.poetry]
+name = "odapi"
+version = "0.1.0"
+description = "Odyfo RESTful API"
+authors = ["coolneng <akasroua@gmail.com>"]
+license = "GPL-3.0-or-later"
+
+[tool.poetry.dependencies]
+python = "^3.8"
+fastapi = "^0.63.0"
+uvicorn = "^0.13.3"
+pydantic = "^1.7.3"
+email-validator = "^1.1.2"
+SQLAlchemy = "^1.3.23"
+alembic = "^1.5.4"
+twilio = "^6.51.1"
+passlib = "^1.7.4"
+bcrypt = "^3.2.0"
+psycopg2 = "^2.8.6"
+
+[tool.poetry.dev-dependencies]
+pytest = "^6.2.2"
+isort = "^5.7.0"
+pyflakes = "^2.2.0"
+
+[build-system]
+requires = ["poetry-core>=1.0.0"]
+build-backend = "poetry.core.masonry.api"

shell.nix

@@ -2,22 +2,27 @@
 
 with pkgs;
 
-mkShell {
-  buildInputs = [
-    # Dependencies
-    python38Packages.fastapi
-    python38Packages.uvicorn
-    python38Packages.pydantic
-    python38Packages.email_validator
-    python38Packages.sqlalchemy
-    python38Packages.alembic
-    python38Packages.pytest
-    python38Packages.twilio
-    python38Packages.passlib
-    python38Packages.bcrypt
-    sqlite
-    # Development tools
-    python38Packages.isort
-    python38Packages.pyflakes
-  ];
+let
+  sql_file = "assets/db_creation.sql";
+  data_dir = "$(pwd)/.pgdata";
+
+in mkShell {
+  buildInputs = [ python38 poetry postgresql ];
+
+  shellHook = ''
+    trap "kill 0" EXIT
+    export PGDATA="${data_dir}"
+    export PGHOST="${data_dir}"
+
+    if [ ! -d ${data_dir} ]; then
+      initdb --auth-local=trust --no-locale --encoding=UTF8
+    fi
+
+    if ! pg_ctl status; then
+      pg_ctl start -o "--unix_socket_directories=${data_dir} --listen_addresses='''"
+    fi
+
+    psql -d postgres -f ${sql_file}
+    alias psql='psql -d postgres'
+  '';
 }