Issue: example error parsing problem

.editorconfig

@@ -0,0 +1,10 @@
+# editorconfig.org
+root = true
+
+[*]
+indent_style = space
+indent_size = 2
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true

.github/workflows/deploy.yml

@@ -0,0 +1,64 @@
+name: Deploy
+on:
+  push:
+    branches:
+    - master
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/[email protected]
+      with:
+        submodules: true
+    - name: Unshallow
+      run: git fetch --prune --unshallow
+    - uses: serras/setup-stack@v3
+    - uses: actions/[email protected]
+      name: Cache ~/.stack
+      with:
+        path: ~/.stack
+        key: ${{ runner.os }}-stack-${{ hashFiles('stack.yaml') }}
+        restore-keys: |
+          ${{ runner.os }}-stack-
+    - uses: actions/[email protected]
+      name: Cache .stack-work
+      with:
+        path: .stack-work
+        key: ${{ runner.os }}-stack-work-${{ hashFiles('stack.yaml') }}-${{ '**/*.hs' }}
+        restore-keys: |
+          ${{ runner.os }}-stack-work-
+    - name: Get rdkafka
+      run: sudo apt-get install librdkafka-dev
+    - name: Get Ruby and Bundler
+      uses: ruby/setup-ruby@v1
+      with:
+        bundler: 2.1.2
+        ruby-version: 2.6
+    - name: Build microsite without Haddock
+      run: |
+        bundle config set path 'vendor/bundle'
+        bundle install --gemfile docs/Gemfile
+        BUNDLE_GEMFILE=./docs/Gemfile bundle exec jekyll build -b /mu-haskell -s docs -d gen-docs
+    - name: Get Standalone Haddock
+      run: stack --resolver lts-14.27 install standalone-haddock
+    - name: Build microsite from last release
+      run: |
+        LAST_TAG=$(git describe --abbrev=0 --tags)
+        git checkout $LAST_TAG
+        bash ./generate-haddock-docs.sh
+        bundle config set path 'vendor/bundle'
+        bundle install --gemfile docs/Gemfile
+        BUNDLE_GEMFILE=./docs/Gemfile bundle exec jekyll build -b /mu-haskell -s docs -d gen-docs
+    - name: Build microsite from master
+      run: |
+        git checkout master
+        bash ./generate-haddock-docs.sh
+        bundle config set path 'vendor/bundle'
+        bundle install --gemfile docs/Gemfile
+        BUNDLE_GEMFILE=./docs/Gemfile bundle exec jekyll build -b /mu-haskell/wip -s docs -d gen-docs/wip
+    - name: Deploy microsite
+      uses: peaceiris/actions-gh-pages@v2
+      env:
+        ACTIONS_DEPLOY_KEY: ${{ secrets.ACTIONS_DEPLOY_KEY }}
+        PUBLISH_BRANCH: gh-pages
+        PUBLISH_DIR: ./gen-docs

.github/workflows/haskell.yml

@@ -0,0 +1,22 @@
+name: Haskell CI
+on: [push]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/[email protected]
+      with:
+        submodules: true
+    - uses: cachix/install-nix-action@v12
+    - uses: cachix/cachix-action@v8
+      with:
+        name: 47deg
+        signingKey: '${{ secrets.CACHIX_SIGNING_KEY }}'
+    - run: nix-build
+    - name: 'Set up HLint'
+      uses: rwe/[email protected]
+    - name: 'Run HLint'
+      uses: rwe/[email protected]
+      with:
+        path: '["core/schema/src/", "core/rpc/src/", "core/optics/src/", "core/lens/src/", "adapter/avro/src/", "adapter/protobuf/src/", "adapter/persistent/src/", "adapter/kafka/src/", "grpc/common/src/", "grpc/client/src/", "grpc/server/src/", "graphql/src/", "servant/server/src/", "instrumentation/prometheus/src/", "instrumentation/tracing/src/" ]'
+        fail-on: warning

.gitignore

@@ -1,5 +1,20 @@
 stack*.yaml.lock
-.*
+.stack-work
 *~
-dist
-*.pyc
+dist*
+*.pyc
+.*sw?
+
+## User files
+.DS_Store
+
+## Jekyll
+_site
+.sass-cache
+.jekyll-metadata
+.jekyll-cache
+
+## Ruby environment normalization:
+.bundle/
+/docs/vendor/
+docs/haddock

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "examples/library"]
+	path = examples/library
+	url = https://github.com/higherkindness/mu-graphql-example-elm.git

.stylish-haskell.yaml

@@ -0,0 +1,63 @@
+steps:
+  - simple_align:
+      cases: true
+      top_level_patterns: true
+      records: true
+
+  # Import cleanup
+  - imports:
+      align: global
+      list_align: after_alias
+      pad_module_names: true
+      long_list_align: inline
+      empty_list_align: inherit
+      list_padding: 4
+      separate_lists: true
+      space_surround: false
+
+  # Language pragmas
+  - language_pragmas:
+      style: vertical
+      align: true
+      remove_redundant: true
+      language_prefix: language
+
+  # Remove trailing whitespace
+  - trailing_whitespace: {}
+
+columns: 100
+newline: native
+cabal: true
+language_extensions:
+  - BangPatterns
+  - ConstraintKinds
+  - DataKinds
+  - DefaultSignatures
+  - DeriveAnyClass
+  - DeriveDataTypeable
+  - DeriveGeneric
+  - DerivingStrategies
+  - DerivingVia
+  - ExplicitNamespaces
+  - FlexibleContexts
+  - FlexibleInstances
+  - FunctionalDependencies
+  - GADTs
+  - GeneralizedNewtypeDeriving
+  - InstanceSigs
+  - KindSignatures
+  - LambdaCase
+  - MultiParamTypeClasses
+  - MultiWayIf
+  - NamedFieldPuns
+  - NoImplicitPrelude
+  - OverloadedStrings
+  - QuasiQuotes
+  - RecordWildCards
+  - ScopedTypeVariables
+  - StandaloneDeriving
+  - TemplateHaskell
+  - TupleSections
+  - TypeApplications
+  - TypeFamilies
+  - ViewPatterns

.vscode/extensions.json

@@ -0,0 +1,6 @@
+{
+  "recommendations": [
+    "haskell.haskell",
+    "EditorConfig.EditorConfig"
+  ]
+}

.vscode/settings.json

@@ -0,0 +1,7 @@
+{
+  "[haskell]": {
+    "editor.formatOnSave": true,
+    "editor.defaultFormatter": "haskell.haskell"
+  },
+  "haskell.formattingProvider": "stylish-haskell"
+}

CODEOWNERS

@@ -0,0 +1 @@
+* @serras @kutyel

DEVELOPMENT.md

@@ -0,0 +1,38 @@
+# Development recommendations
+
+Most of our developers use using [Visual Studio Code](https://code.visualstudio.com/). In that case, you just have to open the project, and install the recommended extensions. Before continuing, make sure you've read:
+
+- [Alejandro's post on setting up a Haskell development environment](https://www.47deg.com/blog/setting-up-haskell/), but forget about the Visual Studio Code configuration outlined there.
+- [Kowainik's Haskell Style Guide](https://kowainik.github.io/posts/2019-02-06-style-guide).
+
+## Setting up the project
+
+### Native dependencies
+
+The included `adapter/kafka` project requires development headers of the rdkafka library:
+* on macOS `sudo brew install librdkafka`
+* on fedora `sudo dnf install librdkafka-devel`
+* on debian `sudo apt-get install librdkafka-dev`
+
+### Git submodules
+
+This project uses git submodules (notably for examples/library/). You can run `git submodule update --init --recursive` once after checkout, or `git config --global submodule.recurse true` to globally enable submodules.
+
+### Integration tests
+
+See also https://github.com/higherkindness/mu-scala-haskell-integration-tests
+
+## Visual Studio Code extensions
+
+To make our lives easier while developing in Haskell, we use a set of recommended extensions. The first time you open the project, the editor should suggest to install all those you do not have:
+
+- [Haskell](https://marketplace.visualstudio.com/items?itemName=haskell.haskell), the best thing that happened to Haskell for editors/IDEs! ❤️
+- [editorconfig](https://marketplace.visualstudio.com/items?itemName=EditorConfig.EditorConfig), to have consistency between different editors and envs 🐀
+
+## Styling 💅🏼
+
+We loosely follow [Kowainik's Haskell Style Guide](https://kowainik.github.io/posts/2019-02-06-style-guide). In order to automate styling, we use [stylish-haskell](https://github.com/jaspervdj/stylish-haskell), for which we provide a `.stylish-haskell.yaml` configuration file.
+
+We don't provide any git hook or tool that enforces our style. By default the provided `.vscode/settings.json` file runs styling on every save. However, before you propose any PR please make sure to run `stylish-haskell` yourself, and to follow our style guide mentioned above to the extent possible. 😊
+
+Happy hacking! 👏🏼

rpc/LICENSE → LICENSE

@@ -187,7 +187,7 @@
       same "printed page" as the copyright notice for easier
       identification within third-party archives.
 
-   Copyright [yyyy] [name of copyright owner]
+   Copyright © 2019-2020 47 Degrees. <http://47deg.com>
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.

README.md

@@ -1,16 +1,14 @@
 # Mu for Haskell
 
-This repo defines a set of libraries which implement a similar functionality to [Mu for Scala](http://higherkindness.io/mu/), but in Haskell.
+[![built with nix](https://builtwithnix.org/badge.svg)](https://builtwithnix.org)
+[![Actions Status](https://github.com/higherkindness/mu-haskell/workflows/Haskell%20CI/badge.svg)](https://github.com/higherkindness/mu-haskell/actions)
 
-* [`mu-schema`](https://github.com/higherkindness/mu-haskell/tree/master/schema) defines schemas for messages and conversion from and to Avro, Protocol Buffers, and JSON.
-* [`mu-rpc`](https://github.com/higherkindness/mu-haskell/tree/master/rpc) defines schemas for service APIs, and the notion of a server for one such API.
-* [`mu-grpc`](https://github.com/higherkindness/mu-haskell/tree/master/grpc) serves a `mu-rpc` server using gRPC.
+This repo defines a set of libraries to write microservices in a format- and protocol-independent way. It shares the same goals as [Mu for Scala](http://higherkindness.io/mu/), but using idiomatic Haskell and more type-level techniques.
 
-Each library contains a brief tutorial on how to use it. But if you want to see some examples, here they are:
+## [Documentation](docs)
 
-* [Haskell definition](https://github.com/higherkindness/mu-haskell/blob/master/schema/src/Mu/Schema/Examples.hs) of schemas corresponding to this [Avro](https://github.com/higherkindness/mu-haskell/blob/master/schema/test/avro/example.avsc) and [Protocol Buffers](https://github.com/higherkindness/mu-haskell/blob/master/schema/test/protobuf/example.proto) files.
-* [Haskell definition and implementation](https://github.com/higherkindness/mu-haskell/blob/master/rpc/src/Mu/Rpc/Examples.hs) of a server corresponding to this [gRPC API](https://github.com/higherkindness/mu-haskell/blob/master/grpc/test/helloworld.proto).
+## Contributing
 
-## Building
+This set of libraries are thought to be built using [Stack](https://docs.haskellstack.org). Just jump into the folder and run `stack build`! The top-level `stack.yaml` defines a common resolver and set of dependencies for all the packages.
 
-This set of libraries are thought to be built using [Stack](https://docs.haskellstack.org). Just jump into the folder and run `stack build`! The top-level `stack.yaml` defines a common resolver and set of dependencies for all the packages.
+If you want to contribute, please be sure to read the [development guidelines](DEVELOPMENT.md) first.

RELEASE.md

@@ -0,0 +1,23 @@
+# Releasing a new version of Mu-Haskell
+
+This list assumes you have your Hackage username and password set in your `.cabal/config` file.
+
+1. Run `./test-schema.sh` and check that no errors are found
+    - If found, abort and open issue
+2. Check that you can build with all compilers, and update project files if required:
+    - `stack build` (for the current LTS)
+    - `stack build --stack-yaml stack-nightly.yaml` (for the next version)
+    - `cabal build all`
+3. For each package, run the following commands:
+
+    ```
+    ./release-package.sh <package> <version>
+    ```
+
+4. Push and merge any pending changes
+5. Run `./test-templates.sh` and check that no errors are found
+    - If found, update templates in `templates` folder and open a PR
+6. Publish a new release in GitHub:
+    - Tag by running `git tag -a vX.Y -m "Release X.Y"`
+    - Push the tag `git push --tags`
+    - Create a new release in [GitHub](https://github.com/higherkindness/mu-haskell/releases/new) for that tag, or if using [`hub`](https://hub.github.com/hub-release.1.html), run `hub release create vX.Y`

grpc/LICENSE → adapter/avro/LICENSE

@@ -187,7 +187,7 @@
       same "printed page" as the copyright notice for easier
       identification within third-party archives.
 
-   Copyright [yyyy] [name of copyright owner]
+   Copyright © 2019-2020 47 Degrees. <http://47deg.com>
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.

adapter/avro/hie.yaml

@@ -0,0 +1,6 @@
+cradle:
+  stack:
+    - path: "./src"
+      component: "mu-avro:lib"
+    - path: "./test"
+      component: "mu-avro:exe:test-avro"