Add minimal tools.deps support

Just enough to allow using aleph as a git dependency via
tools.deps. Both the deps.edn file and build.clj's inputs are
generated from project.clj which remains the source of truth for
now. Can be used as a starting point for a potential full switch to
tools.deps in the future.

Also included is a script for re-generating these files, as well as a
CI check which should ensure that the generated files don't
diverge. Note that these are intentionally not written as tools.deps
or babashka tasks so as not to introduce additional dev and build
dependencies.

Author: DerGuteMoritz

.circleci/config.yml

@@ -37,5 +37,7 @@ jobs:
             - ~/.m2
           key: v1-dependencies-{{ checksum "project.clj" }}
 
+      - run: deps/ensure-deps-up-to-date
+
       # run tests!
       - run: lein do clean, test

deps.edn

@@ -0,0 +1,31 @@
+;; DO NOT EDIT MANUALLY - generated from project.clj via deps/lein-to-deps
+{:paths ["src/" "target/classes/"],
+ :deps
+ {org.clojure/tools.logging
+  {:mvn/version "1.1.0", :exclusions [org.clojure/clojure]},
+  io.netty/netty-handler-proxy {:mvn/version "4.1.79.Final"},
+  manifold/manifold {:mvn/version "0.2.4"},
+  io.netty/netty-codec {:mvn/version "4.1.79.Final"},
+  io.netty/netty-transport-native-epoll$linux-aarch_64
+  {:mvn/version "4.1.79.Final"},
+  org.clj-commons/dirigiste {:mvn/version "1.0.1"},
+  io.netty/netty-handler {:mvn/version "4.1.79.Final"},
+  org.clj-commons/primitive-math {:mvn/version "1.0.0"},
+  io.netty/netty-transport-native-epoll$linux-x86_64
+  {:mvn/version "4.1.79.Final"},
+  io.netty/netty-transport {:mvn/version "4.1.79.Final"},
+  org.clj-commons/byte-streams {:mvn/version "0.3.1"},
+  io.netty/netty-codec-http {:mvn/version "4.1.79.Final"},
+  potemkin/potemkin {:mvn/version "0.4.5"},
+  io.netty/netty-resolver {:mvn/version "4.1.79.Final"},
+  io.netty/netty-resolver-dns {:mvn/version "4.1.79.Final"}},
+ :aliases
+ {:build
+  {:paths ["deps"],
+   :deps
+   {io.github.clojure/tools.build
+    {:git/sha "cde5adf5d56fe7238de509339e63627f438e5d4b",
+     :git/url "https://github.com/clojure/tools.build.git"}},
+   :ns-default aleph.build}},
+ :deps/prep-lib
+ {:ensure "target/classes/", :alias :build, :fn compile-java}}

deps/aleph/build.clj

@@ -0,0 +1,8 @@
+(ns aleph.build
+  (:require [clojure.tools.build.api :as b]))
+
+(def basis (b/create-basis {:project "deps.edn"}))
+(def build-edn (read-string (slurp "deps/aleph/build.edn")))
+
+(defn compile-java [_]
+  (b/javac (assoc (:javac build-edn) :basis basis)))

deps/aleph/build.edn

@@ -0,0 +1,5 @@
+;; DO NOT EDIT MANUALLY - generated from project.clj via deps/lein-to-deps
+{:javac
+ {:src-dirs ["src/aleph/utils/"],
+  :class-dir "target/classes/",
+  :javac-opts ["-target" "1.8" "-source" "1.8"]}}

deps/aleph/lein_to_deps.clj

@@ -0,0 +1,57 @@
+(ns aleph.lein-to-deps
+  (:require
+   [clojure.java.io :as io]
+   [clojure.pprint :as pp]))
+
+(defn convert-lein-deps [deps]
+  (into {}
+        (map (fn [[name version & {:keys [classifier exclusions]}]]
+               (let [name (if classifier
+                            (symbol (str name "$" classifier))
+                            name)
+                     params (cond-> {:mvn/version version}
+                              (seq exclusions)
+                              (assoc :exclusions (mapv first exclusions)))]
+                 [name params])))
+        deps))
+
+(defn relativize-path [p]
+  (-> (System/getProperty "user.dir")
+      io/file
+      .toURI
+      (.relativize (-> p io/file .toURI))
+      .getPath))
+
+(defn write-edn-file [path data]
+  (binding [*print-namespace-maps* false]
+    (with-open [w (io/writer (io/file path))]
+      (binding [*out* w]
+        (println ";; DO NOT EDIT MANUALLY - generated from project.clj via deps/lein-to-deps")
+        (pp/pprint data)))))
+
+(defn run []
+  (let [pprinted-project-clj (read-string (slurp *in*))
+        deps (convert-lein-deps (:dependencies pprinted-project-clj))
+        class-dir (relativize-path (:compile-path pprinted-project-clj))
+        source-paths (conj (mapv relativize-path (:source-paths pprinted-project-clj))
+                           class-dir)
+        java-source-dirs (mapv relativize-path (:java-source-paths pprinted-project-clj))]
+    (write-edn-file "deps.edn"
+                    {:paths source-paths
+                     :deps deps
+                     :aliases
+                     {:build
+                      {:paths ["deps"]
+                       :deps
+                       {'io.github.clojure/tools.build
+                        {:git/sha "cde5adf5d56fe7238de509339e63627f438e5d4b"
+                         :git/url "https://github.com/clojure/tools.build.git"}},
+                       :ns-default 'aleph.build}}
+                     :deps/prep-lib
+                     {:ensure class-dir
+                      :alias :build
+                      :fn 'compile-java}})
+    (write-edn-file "deps/aleph/build.edn"
+                    {:javac {:src-dirs java-source-dirs
+                             :class-dir class-dir
+                             :javac-opts (:javac-options pprinted-project-clj)}})))

deps/ensure-deps-up-to-date

@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+DEPS_DIR="$(dirname -- "${BASH_SOURCE[0]}")"
+
+"${DEPS_DIR}/lein-to-deps"
+
+for f in deps.edn deps/aleph/build.edn; do
+    if ! git diff --exit-code "$f"; then
+        echo >&2
+        echo "ERROR: ${f} needs to be re-generated via deps/lein-to-deps" >&2
+        exit 1
+    fi
+done

deps/lein-to-deps

@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+cd "$(dirname -- "${BASH_SOURCE[0]}")/.."
+
+lein with-profiles -default pprint | lein with-profiles +lein-to-deps run -m aleph.lein-to-deps/run

project.clj

@@ -28,6 +28,7 @@
                                    [com.cognitect/transit-clj "1.0.324"]
                                    [spootnik/signal "0.2.4"]
                                    [me.mourjo/dynamic-redef "0.1.0"]]}
+             :lein-to-deps {:source-paths ["deps"]}
              ;; This is for self-generating certs for testing ONLY:
              :test {:dependencies [[org.bouncycastle/bcprov-jdk15on "1.69"]
                                    [org.bouncycastle/bcpkix-jdk15on "1.69"]]
@@ -43,6 +44,7 @@
   :plugins [[lein-codox "0.10.7"]
             [lein-jammin "0.1.1"]
             [lein-marginalia "0.9.1"]
+            [lein-pprint "1.3.2"]
             [ztellman/lein-cljfmt "0.1.10"]]
   :java-source-paths ["src/aleph/utils"]
   :cljfmt {:indents {#".*" [[:inner 0]]}}