Use Buildkite

Replace CircleCI with Buildkite.

.buildkite/pipeline.yml

@@ -0,0 +1,8 @@
+steps:
+  - label: Build and test
+    command: |
+      nix-build --keep-going --no-out-link
+      echo $NIX_PATH
+      ./format.sh
+      git diff --exit-code --color=always
+    timeout: 100

.circleci/config.yml

@@ -1,49 +0,0 @@
-version: 2
-
-jobs:
-  build:
-    docker:
-      - image: nixos/nix:2.1.3
-    steps:
-      - checkout
-      - run:
-          name: Add ca-certificates
-          command: |
-            apk --no-progress update
-            apk --no-progress add ca-certificates
-      - run:
-          name: Setup Cachix
-          command: |
-            nix-env -iA cachix -f https://cachix.org/api/v1/install
-            USER=dummy cachix use tweag
-      - run:
-          name: Build environment
-          command: |
-            nix-shell --pure --run :
-      - run:
-          name: Push Cachix
-          command: |
-            if [ -n "$CACHIX_SIGNING_KEY" ];
-              then nix-store -qR --include-outputs $(nix-instantiate default.nix) | cachix push tweag;
-            fi
-      - run:
-          name: Build the package (includes running the tests)
-          command: nix-build --keep-going
-      - run:
-          name: Check formatting
-          command: |
-            ./format.sh
-            nix-shell -p "(import ./nix/nixpkgs/default.nix).git" --command "git diff --exit-code --color=always"
-      - run:
-          name: Generate Haddocks
-          command: nix-build --attr ormolu.doc
-      - store_artifacts:
-          path: result-doc/share/doc
-          destination: haddock
-
-workflows:
-  version: 2
-  build:
-    jobs:
-      - build:
-          context: org-global

README.md

@@ -4,7 +4,7 @@
 [![Hackage](https://img.shields.io/hackage/v/ormolu.svg?style=flat)](https://hackage.haskell.org/package/ormolu)
 [![Stackage Nightly](http://stackage.org/package/ormolu/badge/nightly)](http://stackage.org/nightly/package/ormolu)
 [![Stackage LTS](http://stackage.org/package/ormolu/badge/lts)](http://stackage.org/lts/package/ormolu)
-[![CircleCI](https://circleci.com/gh/tweag/ormolu/tree/master.svg?style=svg&circle-token=cfd37a39265561eb44e608f97cf953cb2a394c03)](https://circleci.com/gh/tweag/ormolu/tree/master)
+[![Build status](https://badge.buildkite.com/8e3b0951f3652b77e1c422b361904136a539b0522029156354.svg?branch=master)](https://buildkite.com/tweag-1/ormolu)
 
 Ormolu is a formatter for Haskell source code. The project was created with
 the following goals in mind:

default.nix

@@ -56,6 +56,12 @@ in {
       haskellPackages.ghcid
     ];
   };
+  withOrmolu = haskellPackages.shellFor {
+    packages = ps: [];
+    buildInputs = [
+      haskellPackages.ormolu
+    ];
+  };
   inherit ormoluOverlay ormoluCompiler;
   hackage = ormolizedPackages false;
   hackageTests = with pkgs.lib; pkgs.recurseIntoAttrs (

format.sh

@@ -1,5 +1,5 @@
 #!/usr/bin/env nix-shell
-#!nix-shell -p "(import ./default.nix {}).ormolu" -i bash --pure
+#!nix-shell default.nix -A withOrmolu -i bash --pure
 #
 # Format Ormolu using current version of Ormolu.