Initial commit

14 files changed, 628 insertions, 0 deletions

diff --git a/.github/workflows/CI.yaml b/.github/workflows/CI.yaml
new file mode 100644
index 0000000..84295c7
--- /dev/null
+++ b/.github/workflows/CI.yaml
@@ -0,0 +1,90 @@
+name: CI
+
+on: push
+
+jobs:
+
+  nix-build:
+    name: Nix build
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2.3.4
+      - uses: cachix/install-nix-action@v13
+        with:
+          install_url: https://nixos-nix-install-tests.cachix.org/serve/i6laym9jw3wg9mw6ncyrk6gjx4l34vvx/install
+          install_options: '--tarball-url-prefix https://nixos-nix-install-tests.cachix.org/serve'
+          extra_nix_config: |
+            experimental-features = nix-command flakes
+            access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
+      - uses: cachix/cachix-action@v8
+        with:
+          name: jmc
+          authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
+      - name: Build gsa-parser
+        run: nix build -L
+      # TODO `nix flake check` is currently system-dependent but should be used here
+      - name: Build gsa-parser checks
+        run: nix build -L '.#checks.x86_64-linux."gsa-parser:test:gsa-parser-test"'
+      - name: Build gsa-parser shell
+        run: nix build -L '.#devShell.x86_64-linux'
+
+  stack-build:
+    name: Stack ${{ matrix.resolver }} on ${{ matrix.os }} (${{ matrix.required }})
+    strategy:
+      fail-fast: false
+      matrix:
+        resolver: [ nightly, lts-18, lts-17, lts-16, lts-15, lts-14 ]
+        os: [ macos-latest, ubuntu-latest ]
+        required: [ required ]
+        # include:
+        #   - resolver: nightly
+        #     os: ubuntu-latest
+        #     required: optional
+    continue-on-error: ${{ matrix.required == 'optional' }}
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v2
+      - uses: haskell/actions/setup@v1
+        with:
+          enable-stack: true
+      ## For some reason, stack caching seems to be very brittle, and cause a lot of build failures.
+      ## I haven't investigated very thoroughly what to best do about this, but for now, I'm just not caching stack builds.
+      # - uses: actions/cache@v2
+      #   with:
+      #     path: |
+      #       ~/.stack
+      #       .stack-work
+      #     key: stack-cache-${{ matrix.os }}-${{ matrix.resolver }}-${{ hashFiles('**/*.cabal') }}
+      - run: stack init --resolver ${{ matrix.resolver }}
+      - run: stack build --resolver ${{ matrix.resolver }} --only-dependencies
+      - run: stack build --resolver ${{ matrix.resolver }}
+      - run: stack build --resolver ${{ matrix.resolver }} --haddock --test --bench --no-run-benchmarks
+
+  cabal-build:
+    name: Cabal GHC ${{ matrix.ghc }} on ${{ matrix.os }} (${{ matrix.required }})
+    strategy:
+      fail-fast: false
+      matrix:
+        ghc: [ '8.6.5', '8.8.3', '8.10.5', '9.0.1' ]
+        os: [ ubuntu-latest, macos-latest ]
+        required: [ required ]
+        include:
+          - ghc: latest
+            os: ubuntu-latest
+            required: optional
+    continue-on-error: ${{ matrix.required == 'optional' }}
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v2
+      - uses: haskell/actions/setup@v1
+        with:
+          ghc-version: ${{ matrix.ghc }}
+      - uses: actions/cache@v2
+        with:
+          path: |
+            ~/.cabal
+            dist-newstyle
+          key: cabal-cache-${{ matrix.os }}-${{ matrix.ghc }}-${{ hashFiles('**/*.cabal') }}
+      - run: cabal new-build --only-dependencies
+      - run: cabal new-build
+      - run: cabal new-test --test-show-details=direct
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..edb8907
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,27 @@
+### Nix ###
+result
+
+### Haskell ###
+dist
+dist-*
+cabal-dev
+*.o
+*.hi
+*.hie
+*.chi
+*.chs.h
+*.dyn_o
+*.dyn_hi
+.hpc
+.hsenv
+.cabal-sandbox/
+cabal.sandbox.config
+*.prof
+*.aux
+*.hp
+*.eventlog
+.stack-work/
+cabal.project.local
+cabal.project.local~
+.HTF/
+.ghc.environment.*
diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..5fccd0a
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,7 @@
+# Changelog
+
+## 0
+
+### [Added]
+### [Removed]
+### [Changed]
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..4d296d3
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,29 @@
+BSD 3-Clause License
+
+Copyright (c) 2021, Yann Herklotz
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+3. Neither the name of the copyright holder nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..e5bf9e8
--- /dev/null
+++ b/README.md
@@ -0,0 +1,5 @@
+# gsa-parser
+[![gsa-parser on hackage](https://img.shields.io/hackage/v/gsa-parser)](http://hackage.haskell.org/package/gsa-parser)
+[![gsa-parser on Stackage Nightly](https://stackage.org/package/gsa-parser/badge/nightly)](https://stackage.org/nightly/package/gsa-parser)
+
+Generated with [template-haskell](https://github.com/jonascarpay/template-haskell)
diff --git a/app/Main.hs b/app/Main.hs
new file mode 100644
index 0000000..2ca1f1d
--- /dev/null
+++ b/app/Main.hs
@@ -0,0 +1,4 @@
+import Lib
+
+main :: IO ()
+main = putStrLn "heyyyyyy"
diff --git a/bench/Main.hs b/bench/Main.hs
new file mode 100644
index 0000000..04c2719
--- /dev/null
+++ b/bench/Main.hs
@@ -0,0 +1,4 @@
+import Lib
+
+main :: IO ()
+main = putStrLn "heyyyyyyyyyyyyyyyyyyyy"
diff --git a/cabal.project b/cabal.project
new file mode 100644
index 0000000..4964617
--- /dev/null
+++ b/cabal.project
@@ -0,0 +1,5 @@
+packages:
+  ./
+
+package gsa-parser
+  tests: True
diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..7ba97d3
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,310 @@
+{
+  "nodes": {
+    "HTTP": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1451647621,
+        "narHash": "sha256-oHIyw3x0iKBexEo49YeUDV1k74ZtyYKGR2gNJXXRxts=",
+        "owner": "phadej",
+        "repo": "HTTP",
+        "rev": "9bc0996d412fef1787449d841277ef663ad9a915",
+        "type": "github"
+      },
+      "original": {
+        "owner": "phadej",
+        "repo": "HTTP",
+        "type": "github"
+      }
+    },
+    "cabal-32": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1603716527,
+        "narHash": "sha256-sDbrmur9Zfp4mPKohCD8IDZfXJ0Tjxpmr2R+kg5PpSY=",
+        "owner": "haskell",
+        "repo": "cabal",
+        "rev": "94aaa8e4720081f9c75497e2735b90f6a819b08e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "haskell",
+        "ref": "3.2",
+        "repo": "cabal",
+        "type": "github"
+      }
+    },
+    "cabal-34": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1622475795,
+        "narHash": "sha256-chwTL304Cav+7p38d9mcb+egABWmxo2Aq+xgVBgEb/U=",
+        "owner": "haskell",
+        "repo": "cabal",
+        "rev": "b086c1995cdd616fc8d91f46a21e905cc50a1049",
+        "type": "github"
+      },
+      "original": {
+        "owner": "haskell",
+        "ref": "3.4",
+        "repo": "cabal",
+        "type": "github"
+      }
+    },
+    "cardano-shell": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1608537748,
+        "narHash": "sha256-PulY1GfiMgKVnBci3ex4ptk2UNYMXqGjJOxcPy2KYT4=",
+        "owner": "input-output-hk",
+        "repo": "cardano-shell",
+        "rev": "9392c75087cb9a3d453998f4230930dea3a95725",
+        "type": "github"
+      },
+      "original": {
+        "owner": "input-output-hk",
+        "repo": "cardano-shell",
+        "type": "github"
+      }
+    },
+    "flake-utils": {
+      "locked": {
+        "lastModified": 1631561581,
+        "narHash": "sha256-3VQMV5zvxaVLvqqUrNz3iJelLw30mIVSfZmAaauM3dA=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "7e5bf3925f6fbdfaf50a2a7ca0be2879c4261d19",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "flake-utils_2": {
+      "locked": {
+        "lastModified": 1623875721,
+        "narHash": "sha256-A8BU7bjS5GirpAUv4QA+QnJ4CceLHkcXdRp4xITDB0s=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "f7e004a55b120c02ecb6219596820fcd32ca8772",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "ghc-8.6.5-iohk": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1600920045,
+        "narHash": "sha256-DO6kxJz248djebZLpSzTGD6s8WRpNI9BTwUeOf5RwY8=",
+        "owner": "input-output-hk",
+        "repo": "ghc",
+        "rev": "95713a6ecce4551240da7c96b6176f980af75cae",
+        "type": "github"
+      },
+      "original": {
+        "owner": "input-output-hk",
+        "ref": "release/8.6.5-iohk",
+        "repo": "ghc",
+        "type": "github"
+      }
+    },
+    "hackage": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1632964339,
+        "narHash": "sha256-GjL/b4D6m+XOWJ2kqghdGrkDY4I/wLrzMlFpTiMLb/4=",
+        "owner": "input-output-hk",
+        "repo": "hackage.nix",
+        "rev": "2051e81503e4b10f82f877ef06abc5c6f89576f7",
+        "type": "github"
+      },
+      "original": {
+        "owner": "input-output-hk",
+        "repo": "hackage.nix",
+        "type": "github"
+      }
+    },
+    "haskellNix": {
+      "inputs": {
+        "HTTP": "HTTP",
+        "cabal-32": "cabal-32",
+        "cabal-34": "cabal-34",
+        "cardano-shell": "cardano-shell",
+        "flake-utils": "flake-utils_2",
+        "ghc-8.6.5-iohk": "ghc-8.6.5-iohk",
+        "hackage": "hackage",
+        "hpc-coveralls": "hpc-coveralls",
+        "nix-tools": "nix-tools",
+        "nixpkgs": [
+          "haskellNix",
+          "nixpkgs-2105"
+        ],
+        "nixpkgs-2003": "nixpkgs-2003",
+        "nixpkgs-2009": "nixpkgs-2009",
+        "nixpkgs-2105": "nixpkgs-2105",
+        "nixpkgs-unstable": "nixpkgs-unstable",
+        "old-ghc-nix": "old-ghc-nix",
+        "stackage": "stackage"
+      },
+      "locked": {
+        "lastModified": 1632964520,
+        "narHash": "sha256-DEc5rXBnkllRFvWOQRYF0yFdG0rCRZMH2SXG1tjt6SA=",
+        "owner": "input-output-hk",
+        "repo": "haskell.nix",
+        "rev": "7421a25fb842e188eff6612f31a766e479f973a5",
+        "type": "github"
+      },
+      "original": {
+        "owner": "input-output-hk",
+        "repo": "haskell.nix",
+        "type": "github"
+      }
+    },
+    "hpc-coveralls": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1607498076,
+        "narHash": "sha256-8uqsEtivphgZWYeUo5RDUhp6bO9j2vaaProQxHBltQk=",
+        "owner": "sevanspowell",
+        "repo": "hpc-coveralls",
+        "rev": "14df0f7d229f4cd2e79f8eabb1a740097fdfa430",
+        "type": "github"
+      },
+      "original": {
+        "owner": "sevanspowell",
+        "repo": "hpc-coveralls",
+        "type": "github"
+      }
+    },
+    "nix-tools": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1627889534,
+        "narHash": "sha256-9eEbK2nrRp6rYGQoBv6LO9IA/ANZpofwAkxMuGBD45Y=",
+        "owner": "input-output-hk",
+        "repo": "nix-tools",
+        "rev": "15d2e4b61cb63ff351f3c490c12c4d89eafd31a1",
+        "type": "github"
+      },
+      "original": {
+        "owner": "input-output-hk",
+        "repo": "nix-tools",
+        "type": "github"
+      }
+    },
+    "nixpkgs-2003": {
+      "locked": {
+        "lastModified": 1620055814,
+        "narHash": "sha256-8LEHoYSJiL901bTMVatq+rf8y7QtWuZhwwpKE2fyaRY=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "1db42b7fe3878f3f5f7a4f2dc210772fd080e205",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-20.03-darwin",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-2009": {
+      "locked": {
+        "lastModified": 1624271064,
+        "narHash": "sha256-qns/uRW7MR2EfVf6VEeLgCsCp7pIOjDeR44JzTF09MA=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "46d1c3f28ca991601a53e9a14fdd53fcd3dd8416",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-20.09-darwin",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-2105": {
+      "locked": {
+        "lastModified": 1630481079,
+        "narHash": "sha256-leWXLchbAbqOlLT6tju631G40SzQWPqaAXQG3zH1Imw=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "110a2c9ebbf5d4a94486854f18a37a938cfacbbb",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-21.05-darwin",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-unstable": {
+      "locked": {
+        "lastModified": 1628785280,
+        "narHash": "sha256-2B5eMrEr6O8ff2aQNeVxTB+9WrGE80OB4+oM6T7fOcc=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "6525bbc06a39f26750ad8ee0d40000ddfdc24acb",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "old-ghc-nix": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1631092763,
+        "narHash": "sha256-sIKgO+z7tj4lw3u6oBZxqIhDrzSkvpHtv0Kki+lh9Fg=",
+        "owner": "angerman",
+        "repo": "old-ghc-nix",
+        "rev": "af48a7a7353e418119b6dfe3cd1463a657f342b8",
+        "type": "github"
+      },
+      "original": {
+        "owner": "angerman",
+        "ref": "master",
+        "repo": "old-ghc-nix",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "haskellNix": "haskellNix",
+        "nixpkgs": [
+          "haskellNix",
+          "nixpkgs-unstable"
+        ]
+      }
+    },
+    "stackage": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1632964463,
+        "narHash": "sha256-MzScOnxjJJXT86UTEWkNI1pjqAHKqg7w0YZp/OdaZVU=",
+        "owner": "input-output-hk",
+        "repo": "stackage.nix",
+        "rev": "daa4f106dee8e558d5ca94899ee8bf1477eb22c7",
+        "type": "github"
+      },
+      "original": {
+        "owner": "input-output-hk",
+        "repo": "stackage.nix",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..21038e8
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,48 @@
+{
+  description = "gsa-parser";
+
+  inputs.haskellNix.url = "github:input-output-hk/haskell.nix";
+  inputs.nixpkgs.follows = "haskellNix/nixpkgs-unstable";
+  inputs.flake-utils.url = "github:numtide/flake-utils";
+
+  outputs = { self, nixpkgs, flake-utils, haskellNix }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        overlay = self: _: {
+          hsPkgs =
+            self.haskell-nix.project' rec {
+              src = ./.;
+              compiler-nix-name = "ghc8107";
+              shell = {
+                tools = {
+                  cabal = { };
+                  ghcid = { };
+                  haskell-language-server = { };
+                  hlint = { };
+                  ormolu = { };
+                };
+                ## ormolu that uses ImportQualifiedPost.
+                ## To use, remove ormolu from the shell.tools section above, and uncomment the following lines.
+                # buildInputs =
+                #   let
+                #     ormolu = pkgs.haskell-nix.tool compiler-nix-name "ormolu" "latest";
+                #     ormolu-wrapped = pkgs.writeShellScriptBin "ormolu" ''
+                #       ${ormolu}/bin/ormolu --ghc-opt=-XImportQualifiedPost $@
+                #     '';
+                #   in
+                #   [ ormolu-wrapped ];
+              };
+            };
+        };
+        pkgs = import nixpkgs {
+          inherit system;
+          overlays = [
+            haskellNix.overlay
+            overlay
+          ];
+        };
+        flake = pkgs.hsPkgs.flake { };
+      in
+      flake // { defaultPackage = flake.packages."gsa-parser:exe:gsa-parser-exe"; }
+    );
+}
diff --git a/gsa-parser.cabal b/gsa-parser.cabal
new file mode 100644
index 0000000..b360072
--- /dev/null
+++ b/gsa-parser.cabal
@@ -0,0 +1,68 @@
+cabal-version:   2.4
+name:            gsa-parser
+version:         0
+license:         BSD-3-Clause
+build-type:      Simple
+license-file:    LICENSE
+author:          Yann Herklotz
+maintainer:      Yann Herklotz <git@yannherklotz.com>
+copyright:       2021 Yann Herklotz
+tested-with:     GHC ==8.6.3 || ==8.8.3 || ==8.10.5
+extra-doc-files:
+  CHANGELOG.md
+  README.md
+
+-- category:
+-- description:     description
+-- synopsis:        one-line synopsis
+-- homepage:        https://github.com/FIXME/gsa-parser#readme
+-- source-repository head
+--   type:     git
+--   location: git://github.com/FIXME/gsa-parser.git
+
+common common-options
+  build-depends:    base >=4.9 && <5
+  default-language: Haskell2010
+  ghc-options:
+    -Wall -Wcompat -Widentities -Wincomplete-uni-patterns
+    -Wincomplete-record-updates -Wredundant-constraints
+    -fhide-source-paths -Wpartial-fields
+
+library
+  import:          common-options
+  hs-source-dirs:  src
+  exposed-modules: Lib
+  build-depends:
+    , containers
+    , mtl
+
+executable gsa-parser-exe
+  import:         common-options
+  hs-source-dirs: app
+  main-is:        Main.hs
+  build-depends:  gsa-parser
+  ghc-options:    -threaded -rtsopts -with-rtsopts=-N
+
+test-suite gsa-parser-test
+  import:         common-options
+  type:           exitcode-stdio-1.0
+  hs-source-dirs: test
+  main-is:        Spec.hs
+  build-depends:
+    , hspec
+    , HUnit
+    , gsa-parser
+    , QuickCheck
+
+  ghc-options:    -threaded -rtsopts -with-rtsopts=-N
+
+benchmark gsa-parser-bench
+  import:         common-options
+  type:           exitcode-stdio-1.0
+  hs-source-dirs: bench
+  main-is:        Main.hs
+  build-depends:
+    , criterion
+    , gsa-parser
+
+  ghc-options:    -threaded -rtsopts -with-rtsopts=-N
diff --git a/hie.yaml b/hie.yaml
new file mode 100644
index 0000000..b6663a1
--- /dev/null
+++ b/hie.yaml
@@ -0,0 +1,16 @@
+cradle:
+  multi:
+    # - path: "ignore/"
+    #   config: {cradle: {none: }}
+
+    - path: "src"
+      config: {cradle: {cabal: {component: "lib:gsa-parser"}}}
+
+    - path: "app"
+      config: {cradle: {cabal: {component: "gsa-parser:gsa-parser-exe"}}}
+
+    - path: "test"
+      config: {cradle: {cabal: {component: "gsa-parser:gsa-parser-test"}}}
+
+    - path: "bench"
+      config: {cradle: {cabal: {component: "gsa-parser:gsa-parser-bench"}}}
diff --git a/src/Lib.hs b/src/Lib.hs
new file mode 100644
index 0000000..1055c22
--- /dev/null
+++ b/src/Lib.hs
@@ -0,0 +1,7 @@
+module Lib
+  ( someFunc,
+  )
+where
+
+someFunc :: IO ()
+someFunc = putStrLn "hey"
diff --git a/test/Spec.hs b/test/Spec.hs
new file mode 100644
index 0000000..74cfd56
--- /dev/null
+++ b/test/Spec.hs
@@ -0,0 +1,8 @@
+import Test.Hspec
+
+main :: IO ()
+main =
+  hspec $
+    describe "gsa-parser-test" $
+      it "works" $
+        2 + 2 `shouldBe` (4 :: Int)