Using nix on the CI

.circleci/config.yml

@@ -2,32 +2,27 @@ version: 2
 jobs:
  build:
  docker:
- - image: fpco/stack-build
+ - image: nixos/nix:2.3
  steps:
  - checkout
  - run:
- name: Compute cache key
+ name: Setup Cachix
  command: |
- find . -name "*.cabal" -o -name "stack.yaml" -type f | sort | xargs cat > /tmp/stack-deps
- - restore_cache:
- keys:
- - porcupine-stack-deps-{{arch}}-{{checksum "/tmp/stack-deps"}}
- - run:
- name: Setup build toolchain
- command: stack setup
- - run:
- name: Building dependencies
- command: stack test -j1 --only-snapshot --prefetch
- - save_cache:
- paths:
- - "~/.stack"
- key: porcupine-stack-deps-{{arch}}-{{checksum "/tmp/stack-deps"}}
+ apk --no-progress update
+ apk --no-progress add ca-certificates
+ nix-channel --update
+ # Install cachix and activate project cache
+ nix-env -iA cachix -f https://github.com/NixOS/nixpkgs/tarball/1d4de0d552ae9aa66a5b8dee5fb0650a4372d148
+ USER=dummy cachix use tweag
  - run:
  name: Building
- command: stack build --pedantic
- - run:
- name: Building tests
- command: stack test --pedantic --no-run-tests
+ command: nix-shell --run 'cabal new-build all' | cachix push tweag
  - run:
  name: Running tests
- command: stack test
+ command: nix-shell --run 'cabal new-test all' | cachix push tweag
+workflows:
+ version: 2
+ build:
+ jobs:
+ - build:
+ context: org-global

default.nix

@@ -63,7 +63,7 @@ overlayHaskell = _:pkgs:
  owner = "tweag";
  repo = "funflow";
  rev = "v1.5.0";
- sha256 = "05k4icz3lls135aasvf7f7riniw5cmyg8y6phcz4qiikhswlbs0x";
+ sha256 = "1bldpi1fcr6l7qcr7kkwycvp1i9jgpd6b8m4190z9lsiddz0pkav";
  };
  monadBayesSource = pkgs.fetchFromGitHub {
  owner = "tweag"; # Using our fork until https://github.com/adscib/monad-bayes/pull/54 is merged