cabal-vendor is tool for vendoring dependencies of cabal package into local repo

How to use:
1. Create vendor repo with:
   > cabal-vendor fetch

2. Convert repo to suitable for cabal format with
   > cabal-vendor convert

3. Run command
   cabal --config local-repo/config build

4. Profit!

Usage: cabal-vendor [COMMAND] [OPTIONS]

cabal-vendor is a tool for vendoring dependencies of a Cabal package
into a local repository

Commands:
    fetch                   Set up the vendor directory
    convert                 Generate a local repository (usable with Cabal)
                            from the vendor directory

General:
  --help, -h                Show help message