exoscale tools.project

A clojure.tool that allows to work with projects in a streamlined way. It provides an api for common project management tasks, inspired by the conventions enforced by leiningen

Add this to your deps.edn

  :project {:deps {io.github.exoscale/tools.project {:git/sha "..."}}
            :ns-default exoscale.tools.project}

Or install the tool locally:

clojure -Ttools install io.github.exoscale/tools.project '{:git/sha "..."}' :as project

With the tool installed, a new project can be initialized with:

clojure -Tproject init :name com.example/my-lib

Once installed, tools can called using standard tool call syntax, within the project directory:

clojure -T:project jar
clojure -T:project uberjar

A convenience Makefile is provided with projects bootstrapped with clojure -Tproject init, which can assist in discovering the tool.

• add-module: creates a new submodule
• check: validates that namespaces can be loaded
• clean: cleans target directories
• deploy: deploys jars to remote repositories
• format-check: source code format check
• format-fix: source code format fixing
• init: initialize new project
• install: local maven installation
• jar: JAR and POM generation
• lint: source code linting
• merge-deps: managed dependency management
• merge-aliases: managed alias management
• outdated: outdated version check
• prep: handle prep libs
• prep-self: handle prep task for the current project
• release: project release
• task: arbitrary task run
• test: run tests
• uberjar: standalone JAR generation

Note that tools.project does not provide a repl task, this is due to the fact that deps.edn files are always fully function when using this tool, the standard clj tool can be used to start a REPL, editor integration will also remain fully functional.

A few keys control the configuration of the project. A minimum configuration is shown below:

{:exoscale.project/lib com.example/my-lib
 :exoscale.project/version-file "VERSION"
 :exoscale.project/uberjar? true

 :paths ["src" "resources"]
 :deps {org.clojure/clojure {:mvn/version "1.11.1"}}}

See configuration options for a list of all valid options.

Some projects need to build several artifacts, or to expose different libraries. This is what we refer to as multi-module projects.

tools.project supports multi-module projects out of the box, and provides the following functionality:

• All targets adopt a default behavior that is dependent on whether they are called for a multi-module, or standalone project.
• Submodules of a project must be transparent to tooling, i.e: each submodule of a project should have its own fully functional deps.edn file, requiring no additional tooling.
• Default facilities are present to share dependencies and aliases across modules (through deps-modules.

Under the cover, deps-modules uses a mechanism to allow dependency expressions to inherit dependencies from the parent module. To ensure that submodules remain fully independent, deps files are rewritten (see merge-deps and merge-aliases for details.

Let's assume the following module structure:

superproject
├── deps.edn          ;; com.example/superproject-common
└── modules
    ├── client
    │   └── deps.edn  ;; com.example/superproject-client
    └── server
        └── deps.edn  ;; com.example/superproject-server

The corresponding top-level deps.edn file would add the following:

{:exoscale.project/lib com.example/superproject-common
 :exoscale.project/version-file "VERSION"
 :exoscale.project/modules ["." "modules/client" "modules/server"]

 :paths ["src" "resources"]
 :deps {org.clojure/clojure {:mvn/version "1.11.1"}}}

tools.project supports seamless transitions from standalone projects to multi module ones. See add-module for help on how to add a first module.

The easiest way is to pass JAVA_OPTS env variable to the clj invocation and then connect a remote debugger (via eg: IntelliJ):

JAVA_OPTS="-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=*:5005" clj -T:project check

Alternatively, it's possible to call the task directly from your clojure REPl, provided you supply the project alias. Then, you can use your emacs/vim/IDE to debug possible issues.

$ clj -A:project
Clojure 1.12.2
user=> (require 'exoscale.tools.project)
nil
user=> (exoscale.tools.project/check nil)
running prep task for dependencies in: exoscale/partner-api
storing git sha in resources/git-version
Downloading: org/spootnik/deps-check/0.5.2/deps-check-0.5.2.pom from clojars
Downloading: org/spootnik/deps-check/0.5.2/deps-check-0.5.2.jar from clojars
compiling namespace partner-api.basic-handlers
...

When developing against tools.project, due to the presence of a project.clj namespace in the repository, if you use cider, you'll have to jack in from the top level directory, otherwise cider gets confused and tries to treat the repository as a leiningen one.