Remove devenv and change to vanilla flake (#3)

Removed devenv as it was causing pain.
It was a bit of a hassle to move from devenv to vanilla flake and port over the existing library.

Seems to largely work and I've migrated over the github.yml file as well.

TODO: Update the README to reflect the new state of the world and maybe add flake checks.

.envrc

@@ -1,3 +1 @@
-source_url "https://raw.githubusercontent.com/cachix/devenv/d1f7b48e35e6dee421cfd0f51481d17f77586997/direnvrc" "sha256-YBzqskFZxmNb3kYVoKD9ZixoPXJh1C9ZvTLGFRkauZ0="
-
-use devenv
+use flake

.github/workflows/main.yml

@@ -13,18 +13,11 @@ jobs:
     - uses: actions/checkout@v3
     - uses: cachix/install-nix-action@v20
       with:
-        extra_nix_config: |
-          access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
+        nix_path: nixpkgs=channel:nixos-unstable
     - uses: cachix/cachix-action@v12
       with:
         name: fzakaria
-        extraPullNames: devenv
         authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
-    - name: Install devenv.sh
-      run: nix profile install github:cachix/devenv/latest
-      shell: sh
-    - name: Run tests
-      run: |
-        devenv ci
-        devenv shell make lint  
-        devenv shell python -m sqlelf --help
+    - run: nix develop --command make lint
+    - run: nix build --print-build-logs
+    - run: nix run . -- --help

.gitignore

@@ -4,4 +4,7 @@
 devenv.local.nix
 .direnv/
 sqlelf.egg-info/
-*.pyc
+*.pyc
+.vscode/
+dist/
+result

derivation.nix

@@ -0,0 +1,5 @@
+{ poetry2nix, poetryOverrides }:
+poetry2nix.mkPoetryApplication {
+  projectDir = ./.;
+  overrides = poetry2nix.overrides.withDefaults poetryOverrides;
+}