move to cabal, nix flakes, autoformat

Author: mstksg

.envrc

@@ -0,0 +1,2 @@
+watch_file *.cabal
+use flake

.github/workflows/flake-ci.yml

@@ -0,0 +1,78 @@
+name: "Flake CI"
+on:
+  pull_request:
+  push:
+jobs:
+  checks:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Free Disk Space
+      uses: insightsengineering/free-disk-space@v1.1.0
+    - uses: actions/checkout@v3
+    - uses: webfactory/ssh-agent@v0.9.0
+      with:
+        ssh-private-key: ${{ secrets.SSH_PRIVATE_KEY }}
+    - uses: cachix/install-nix-action@v22
+      with:
+        nix_path: nixpkgs=channel:nixos-unstable
+        github_access_token: ${{ secrets.GITHUB_TOKEN }}
+        extra_nix_config: |
+          trusted-public-keys = hydra.iohk.io:f/Ea+s+dFdN+3Y/G+FDgSq+a5NEWhJGzdjvKNGv0/EQ= cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY= loony-tools:pr9m4BkM/5/eSTZlkQyRt57Jz7OMBxNSUiMC4FkcNfk=
+          allow-import-from-derivation = true
+          auto-optimise-store = true
+          substituters = https://hydra.iohk.io https://cache.nixos.org/ https://cache.iog.io https://cache.zw3rk.com https://mstksg.cachix.org
+    - uses: cachix/cachix-action@v13
+      with:
+        name: mstksg
+        authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
+    - run: nix flake check --show-trace
+
+  cache:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Free Disk Space
+      uses: insightsengineering/free-disk-space@v1.1.0
+    - uses: actions/checkout@v4.1.1
+    - uses: webfactory/ssh-agent@v0.9.0
+      with:
+        ssh-private-key: ${{ secrets.SSH_PRIVATE_KEY }}
+    - uses: cachix/install-nix-action@v22
+      with:
+        nix_path: nixpkgs=channel:nixos-unstable
+        github_access_token: ${{ secrets.GITHUB_TOKEN }}
+        extra_nix_config: |
+          trusted-public-keys = hydra.iohk.io:f/Ea+s+dFdN+3Y/G+FDgSq+a5NEWhJGzdjvKNGv0/EQ= cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY= loony-tools:pr9m4BkM/5/eSTZlkQyRt57Jz7OMBxNSUiMC4FkcNfk=
+          allow-import-from-derivation = true
+          auto-optimise-store = true
+          substituters = https://hydra.iohk.io https://cache.nixos.org/ https://cache.iog.io https://cache.zw3rk.com https://mstksg.cachix.org
+    - uses: cachix/cachix-action@v13
+      with:
+        name: mstksg
+        authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
+    - run: nix build --show-trace
+    - run: nix develop --show-trace
+
+  every-compiler:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Free Disk Space
+      uses: insightsengineering/free-disk-space@v1.1.0
+    - uses: actions/checkout@v3
+    - uses: webfactory/ssh-agent@v0.9.0
+      with:
+        ssh-private-key: ${{ secrets.SSH_PRIVATE_KEY }}
+    - uses: cachix/install-nix-action@v22
+      with:
+        nix_path: nixpkgs=channel:nixos-unstable
+        github_access_token: ${{ secrets.GITHUB_TOKEN }}
+        extra_nix_config: |
+          trusted-public-keys = hydra.iohk.io:f/Ea+s+dFdN+3Y/G+FDgSq+a5NEWhJGzdjvKNGv0/EQ= cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY= loony-tools:pr9m4BkM/5/eSTZlkQyRt57Jz7OMBxNSUiMC4FkcNfk=
+          allow-import-from-derivation = true
+          auto-optimise-store = true
+          substituters = https://hydra.iohk.io https://cache.nixos.org/ https://cache.iog.io https://cache.zw3rk.com https://mstksg.cachix.org
+    - uses: cachix/cachix-action@v13
+      with:
+        name: mstksg
+        authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
+    - run: nix build .#everyCompiler
+

.gitignore

@@ -1,12 +1,12 @@
 /.stack-work
 /.shake
 /.build
+/.direnv
 /wiki
 /tags
 /TAGS
 /data
 /samples-exe
-/*.cabal
 /dist-newstyle
 
 /bench-results
@@ -19,3 +19,4 @@
 *.dyn_o
 *.o
 *.hi
+/result