project-toolset-setup.envrc

# shellcheck shell=bash
# vim: filetype=direnv

# Usage:
#
#   use project_toolset_setup TOOLSET_NAME DEV_DIRECTORY
function use_project_toolset_setup() {
    local -r toolset="$1"; shift
    local dev_dir="$1"; shift
    dev_dir="$(cd "${dev_dir}" && pwd)"

    local root
    root="$(dirname "${dev_dir}")"  # TODO: Move this to dot.envrc?

    # See `README.md` for information about directory structure.
    local -r config_dir="${dev_dir}/config"
    local -r toolset_dev_dir="${config_dir}/${toolset}"

    # Import Command Wrapper Direnv library in `.envrc`.
    #
    # For more information see `command-wrapper-direnv-library(7)` manual page,
    # or call:
    #
    # ```Bash
    # TOOLSET help --man direnv-library
    # ```
    #
    # shellcheck source=/dev/null
    source <("${toolset}" --no-aliases completion --library --direnv --content)

    # These options are used by the toolset configuration files.
    {
        env root="${root}" "${toolset}" --no-aliases config --dhall \
        | command_wrapper_dhall_cache "${toolset}" 'options.dhall' "${toolset_dev_dir}"
    } <<< '
        { Type = { projectRoot : Text }
        , default.projectRoot = env:root as Text
        }
    '

    # Configuration files used by the toolset, that are not automatically
    # tracked.
    local -r -a watch_files=(
        "${dev_dir}/config/${toolset}/default/exec-aliases.dhall"
        "${dev_dir}/config/${toolset}/command-wrapper-exec.dhall"
    )
    for file in "${watch_files[@]}"; do
        watch_file "${file}"
    done

    use command_wrapper "${toolset}" "${config_dir}"
}