boot-bundle

Boot-bundle: managed dependencies for boot.

Don't repeat yourself for library coordinates. Upgrade once, upgrade everywhere.

Why

The most common scenario for usage of this library is when you have a repository with multiple boot projects and these projects have overlapping dependencies that you want to manage in one place. That one place is the bundle file.

Usage

Define a bundle file that contains a map of keywords to either:

• a single dependency
• a vector of dependencies and/or keywords

Example:

{:clojure [[org.clojure/clojure "1.8.0"]
           [clojure-future-spec "1.9.0-alpha13"]
           [org.clojure/test.check "0.9.0"]
           [org.clojure/core.async "0.2.391"]]
 :schema [prismatic/schema "1.1.3"]
 :component [[com.stuartsierra/component "0.3.1"]
             [org.clojure/tools.nrepl "0.2.12"]
             [reloaded.repl "0.2.3"]]
 :base [:clojure
        :schema
        :component
        [com.taoensso/timbre "4.7.4"]]
 :clojurescript [org.clojure/clojurescript "1.9.229"]}

Load boot-bundle before you load your other dependencies in build.boot:

(set-env! :dependencies
          '[[boot-bundle "0.1.1" :scope "test"]
            ;; if you share your bundle via clojars, uncomment and change:
            ;; [your-bundle "0.1.1" :scope "test"]
            ]
          ;; if you use a bundle file from the current project's classpath, uncomment:
          ;; :resource-paths #{"resources"}
          )

(require '[boot-bundle :refer [expand-keywords]])

Wrap the dependencies vector in set-env! with expand-keywords:

(set-env!
 :source-paths #{"src"}
 :dependencies
 (expand-keywords
  '[:base
    :clojurescript
    ;; combine this with your remaining dependencies:
    [reagent "0.6.0"]
    ;; ...
   ]))

By default boot-bundle searches for the file boot.bundle.edn on the classpath. This can be overriden by setting either

• the system property boot.bundle.file:

BOOT_JVM_OPTIONS="-Dboot.bundle.file=../bundle.edn"

• the environment variable BOOT_BUNDLE_FILE:

BOOT_BUNDLE_FILE="../bundle.edn"

• the atom bundle-file-path:

(reset! boot-bundle/bundle-file-path "../bundle.edn")

Searching the local file system has priority over searching the classpath.

That's it. You can now use boot as you normally would.

Advanced usage

Manipulating the bundle map

Boot-bundle lets you set the bundle map if you want to. For example, just write

(reset! boot-bundle/bundle-map
        (boot-bundle/read-from-file "../bundle.edn"))

Note that validation only happens when using read-from-file, so when doing something else, you may want to validate yourself:

(swap! boot-bundle/bundle-map
       #(boot-bundle/validate-bundle
         (assoc % :schema '[prismatic/schema "1.1.3"])))

Versions

The function get-version returns the version for a dependency by its keyword. This can be used to define the version of a project in build.boot.

For example, in boot.bundle.edn:

{:myproject [myproject "0.1.0-SNAPSHOT"]}

In myproject's build.boot:

(set-env! :dependencies
          '[[boot-bundle "0.1.1" :scope "test"]])
(require '[boot-bundle :refer [expand-keywords get-version]])
(def +version+ (get-version :myproject))

Boot-bundle also supports version keywords. They are convenient if you need the same version on multiple dependencies. Version keywords are qualified with version and must refer to a string.

Example usage:

In boot.bundle.edn:

{:version/pedestal "0.5.1"
 :pedestal [[io.pedestal/pedestal.service       :version/pedestal]
            [io.pedestal/pedestal.service-tools :version/pedestal]
            [io.pedestal/pedestal.jetty         :version/pedestal]
            [io.pedestal/pedestal.immutant      :version/pedestal]
            [io.pedestal/pedestal.tomcat        :version/pedestal]]}

With every new Pedestal release, you only have to change the version in one place.

Funding

This software was commissioned and sponsored by Doctor Evidence. The Doctor Evidence mission is to improve clinical outcomes by finding and delivering medical evidence to healthcare professionals, medical associations, policy makers and manufacturers through revolutionary solutions that enable anyone to make informed decisions and policies using medical data that is more accessible, relevant and readable.

FAQ

How can I distribute my bundle via clojars?

Check out this example.

Why isn't boot-bundle eating its own dog food?

Boot-bundle is a lightweight library without any external dependencies.

Can I use multiple bundles and merge them?

Sure!

(reset! boot-bundle/bundle-map
  (merge
    (boot-bundle/read-from-file "bundle1.edn")
    (boot-bundle/read-from-file "bundle2.edn")))

How do you use it?

At work we use it in a multi-project repository. We have a bundle.edn file in the root and refer to it from most of the Clojure projects.

How can I opt out?

Start a REPL, eval the call to expand-keywords and substitute this result back into your build.boot.

$ boot repl
boot.user=> (use 'clojure.pprint)
boot.user=> (pprint (expand-keywords '[:clojure]))
[[org.clojure/clojure "1.8.0"]
 [clojure-future-spec "1.9.0-alpha13"]
 [org.clojure/test.check "0.9.0"]
 [org.clojure/core.async "0.2.391"]]
nil

License

Copyright Michiel Borkent 2016.

Distributed under the Eclipse Public License either version 1.0 or (at your option) any later version.