Create the project

.github/workflows/haskell.yml

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+name: Haskell CI
+
+on:
+  # Trigger the workflow on push or pull request,
+  # but only for the master branch
+  push:
+    branches:
+      - master
+  pull_request:
+
+jobs:
+  build:
+    name: ghc ${{ matrix.ghc }}
+    runs-on: ubuntu-16.04
+    strategy:
+      matrix:
+        ghc: ["8.8.1"]
+        cabal: ["3.0"]
+
+    steps:
+    - uses: actions/checkout@v2
+      if: github.event.action == 'opened' || github.event.action == 'synchronize' || github.event.ref == 'refs/heads/master'
+
+    - uses: actions/setup-haskell@v1
+      name: Setup Haskell
+      with:
+        ghc-version: ${{ matrix.ghc }}
+        cabal-version: ${{ matrix.cabal }}
+
+    # We cache the elements of the Cabal store separately,
+    # as the entirety of ~/.cabal can grow very large
+    # for projects with many dependencies.
+
+    - uses: actions/cache@v1
+      name: Cache ~/.cabal/packages
+      with:
+        path: ~/.cabal/packages
+        key: ${{ runner.os }}-${{ matrix.ghc }}-cabal-packages
+    - uses: actions/cache@v1
+      name: Cache ~/.cabal/store
+      with:
+        path: ~/.cabal/store
+        key: ${{ runner.os }}-${{ matrix.ghc }}-cabal-store
+    - uses: actions/cache@v1
+      name: Cache dist-newstyle
+      with:
+        path: dist-newstyle
+        key: ${{ runner.os }}-${{ matrix.ghc }}-fused-effects-dist
+
+    - name: Install dependencies
+      run: |
+        cabal new-update
+        cabal new-configure --enable-tests --write-ghc-environment-files=always -j2
+        cabal new-build --only-dependencies
+    - name: Build & test
+      run: |
+        cabal v2-build
+        cabal new-test --enable-tests

.gitignore

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+### Haskell
+dist
+dist-*
+cabal-dev
+*.o
+*.hi
+*.chi
+*.chs.h
+*.dyn_o
+*.dyn_hi
+*.prof
+*.aux
+*.hp
+*.eventlog
+.virtualenv
+.hsenv
+.hpc
+.cabal-sandbox/
+cabal.sandbox.config
+cabal.config
+cabal.project.local
+.ghc.environment.*
+.HTF/
+# Stack
+.stack-work/
+stack.yaml.lock
+
+### IDE/support
+# Vim
+[._]*.s[a-v][a-z]
+[._]*.sw[a-p]
+[._]s[a-v][a-z]
+[._]sw[a-p]
+*~
+tags
+
+# IntellijIDEA
+.idea/
+.ideaHaskellLib/
+*.iml
+
+# Atom
+.haskell-ghc-mod.json
+
+# VS
+.vscode/
+
+# Emacs
+*#
+.dir-locals.el
+TAGS
+
+# other
+.DS_Store

CHANGELOG.md

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+# Changelog
+
+`fused-effects-async` uses [PVP Versioning][1].
+The changelog is available [on GitHub][2].
+
+## 0.0.0.0
+
+* Initially created.
+
+[1]: https://pvp.haskell.org
+[2]: https://github.com/patrickt/fused-effects-async/releases

LICENSE

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+BSD 3-Clause License
+
+Copyright (c) 2020, Patrick Thomson
+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.

README.md

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+# fused-effects-async
+
+[![Hackage](https://img.shields.io/hackage/v/fused-effects-async.svg?logo=haskell)](https://hackage.haskell.org/package/fused-effects-async)
+[![BSD3 license](https://img.shields.io/badge/license-BSD3-blue.svg)](LICENSE)
+
+Fused-effects wrappers for async and concurrent execution of IO actions.

fused-effects-async.cabal

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+cabal-version:       2.0
+name:                fused-effects-async
+version:             0.0.0.0
+synopsis:            Fused-effects wrappers for async and concurrent execution of IO actions.
+description:         Fused-effects wrappers for async and concurrent execution of IO actions.
+homepage:            https://github.com/patrickt/fused-effects-async
+bug-reports:         https://github.com/patrickt/fused-effects-async/issues
+license:             BSD3
+license-file:        LICENSE
+author:              Patrick Thomson
+maintainer:          [email protected]
+copyright:           2020 Patrick Thomson
+category:            Control
+build-type:          Simple
+extra-doc-files:     README.md
+                   , CHANGELOG.md
+tested-with:         GHC == 8.8.1
+
+source-repository head
+  type:                git
+  location:            https://github.com/patrickt/fused-effects-async.git
+
+library
+  hs-source-dirs:      src
+  exposed-modules:     FusedEffectsAsync
+
+
+  build-depends:       base ^>= 4.13.0.0
+
+
+  ghc-options:         -Wall
+                       -Wincomplete-uni-patterns
+                       -Wincomplete-record-updates
+                       -Wcompat
+                       -Widentities
+                       -Wredundant-constraints
+                       -fhide-source-paths
+                       -Wmissing-export-lists
+                       -Wpartial-fields
+                       -Wmissing-deriving-strategies
+
+  default-language:    Haskell2010
+
+test-suite fused-effects-async-test
+  type:                exitcode-stdio-1.0
+  hs-source-dirs:      test
+  main-is:             Spec.hs
+
+  build-depends:       base ^>= 4.13.0.0
+                     , fused-effects-async
+
+
+  ghc-options:         -Wall
+                       -threaded
+                       -rtsopts
+                       -with-rtsopts=-N
+                       -Wincomplete-uni-patterns
+                       -Wincomplete-record-updates
+                       -Wcompat
+                       -Widentities
+                       -Wredundant-constraints
+                       -fhide-source-paths
+                       -Wmissing-export-lists
+                       -Wpartial-fields
+                       -Wmissing-deriving-strategies
+
+  default-language:    Haskell2010

src/FusedEffectsAsync.hs

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+module FusedEffectsAsync
+       ( someFunc
+       ) where
+
+someFunc :: IO ()
+someFunc = putStrLn ("someFunc" :: String)

test/Spec.hs

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+module Main (main) where
+
+main :: IO ()
+main = putStrLn ("Test suite not yet implemented" :: String)