This project re-implements a subset of the cat command-line tool in
Haskell. It serves as an example of a project built using
the Bazel build system, using rules_haskell
to define the Haskell build, including rules that wrap Cabal to build
third-party dependencies downloadable from Hackage, and
using rules_nixpkgs and Nix to manage system
dependencies.
You need to install the Nix package manager. All further dependencies will be managed using Nix.
To build the package execute the following command in the examples/
directory:
$ nix-shell --pure --run "bazel build //cat_hs/..."
To run the tests execute the following command.
$ nix-shell --pure --run "bazel test //cat_hs/..."
To run the executable enter the following commands.
$ nix-shell --pure --run "bazel run //cat_hs/exec/cat_hs -- -h"
$ nix-shell --pure --run "bazel run //cat_hs/exec/cat_hs -- $PWD/README.md"