generate a cabal project

CHANGELOG.md

+# Revision history for gbs-downloader
+
+## 0.1.0.0 -- YYYY-mm-dd
+
+* First version. Released on an unsuspecting world.

LICENSE

+Copyright (c) 2023, Least Authority TFA GmbH
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+
+    * 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.
+
+    * Neither the name of Least Authority TFA GmbH nor the names of other
+      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
+OWNER 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.

app/Main.hs

+module Main where
+
+import qualified MyLib (someFunc)
+
+main :: IO ()
+main = do
+    putStrLn "Hello, Haskell!"
+    MyLib.someFunc

gbs-downloader.cabal

+cabal-version:   3.0
+
+-- The cabal-version field refers to the version of the .cabal specification,
+-- and can be different from the cabal-install (the tool) version and the
+-- Cabal (the library) version you are using. As such, the Cabal (the library)
+-- version used must be equal or greater than the version stated in this field.
+-- Starting from the specification version 2.2, the cabal-version field must be
+-- the first thing in the cabal file.
+
+-- Initial package description 'gbs-downloader' generated by
+-- 'cabal init'. For further documentation, see:
+--   http://haskell.org/cabal/users-guide/
+--
+-- The name of the package.
+name:            gbs-downloader
+
+-- The package version.
+-- See the Haskell package versioning policy (PVP) for standards
+-- guiding when and how versions should be incremented.
+-- https://pvp.haskell.org
+-- PVP summary:     +-+------- breaking API changes
+--                  | | +----- non-breaking API additions
+--                  | | | +--- code changes with no API change
+version:         0.1.0.0
+
+-- A short (one-line) description of the package.
+synopsis:
+  A library for downloading data from a Great Black Swamp server
+
+-- A longer description of the package.
+-- description:
+
+-- URL for the project homepage or repository.
+homepage:
+  https://whetstone.private.storage/PrivateStorage/gbs-downloader
+
+-- The license under which the package is released.
+license:         BSD-3-Clause
+
+-- The file containing the license text.
+license-file:    LICENSE
+
+-- The package author(s).
+author:          Least Authority TFA GmbH
+
+-- An email address to which users can send suggestions, bug reports, and patches.
+maintainer:      jean-paul@leastauthority.com
+
+-- A copyright notice.
+-- copyright:
+category:        Network
+build-type:      Simple
+
+-- Extra doc files to be distributed with the package, such as a CHANGELOG or a README.
+extra-doc-files: CHANGELOG.md
+
+-- Extra source files to be distributed with the package, such as examples, or a tutorial module.
+-- extra-source-files:
+
+common warnings
+  ghc-options: -Wall
+
+library
+  -- Import common warning flags.
+  import:           warnings
+
+  -- Modules exported by the library.
+  exposed-modules:  MyLib
+
+  -- Modules included in this library but not exported.
+  -- other-modules:
+
+  -- LANGUAGE extensions used by modules in this package.
+  -- other-extensions:
+
+  -- Other library packages from which modules are imported.
+  build-depends:    base ^>=4.14.3.0
+
+  -- Directories containing source files.
+  hs-source-dirs:   src
+
+  -- Base language which the package is written in.
+  default-language: Haskell2010
+
+executable gbs-downloader
+  -- Import common warning flags.
+  import:           warnings
+
+  -- .hs or .lhs file containing the Main module.
+  main-is:          Main.hs
+
+  -- Modules included in this executable, other than Main.
+  -- other-modules:
+
+  -- LANGUAGE extensions used by modules in this package.
+  -- other-extensions:
+
+  -- Other library packages from which modules are imported.
+  build-depends:
+    , base            ^>=4.14.3.0
+    , gbs-downloader
+
+  -- Directories containing source files.
+  hs-source-dirs:   app
+
+  -- Base language which the package is written in.
+  default-language: Haskell2010
+
+test-suite gbs-downloader-test
+  -- Import common warning flags.
+  import:           warnings
+
+  -- Base language which the package is written in.
+  default-language: Haskell2010
+
+  -- Modules included in this executable, other than Main.
+  -- other-modules:
+
+  -- LANGUAGE extensions used by modules in this package.
+  -- other-extensions:
+
+  -- The interface type and version of the test suite.
+  type:             exitcode-stdio-1.0
+
+  -- Directories containing source files.
+  hs-source-dirs:   test
+
+  -- The entrypoint to the test suite.
+  main-is:          Main.hs
+
+  -- Test dependencies.
+  build-depends:
+    , base            ^>=4.14.3.0
+    , gbs-downloader

src/MyLib.hs

+module MyLib (someFunc) where
+
+someFunc :: IO ()
+someFunc = putStrLn "someFunc"

test/Main.hs

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