feat: Cache Clojure dependencies

Dockerfile

@@ -350,6 +350,8 @@ RUN mkdir /opt/boot-clj && cd /opt/boot-clj && \
     chmod +x boot && \
     ln -s /opt/boot-clj/boot /usr/local/bin/boot
 
+# TODO: When upgrading to >= 1.10.1.672, also update approach for populating .m2 with clojure deps:
+# In run-build-functions.sh replace `clojure -Spath -Sforce >/dev/null` with more modern `clojure -P`
 RUN curl -sL https://download.clojure.org/install/linux-install-1.10.1.492.sh | bash
 
 USER buildbot

run-build-functions.sh

@@ -581,6 +581,22 @@ install_dependencies() {
     fi
   fi
 
+  # Clojure CLI
+  if [ -f deps.edn ]
+  then
+    restore_home_cache ".m2" "maven dependencies"
+    restore_home_cache ".gitlibs" "clojure git dependencies"
+    restore_cwd_cache ".cpcache" "clojure classpath"
+    echo "Installing Clojure dependencies"
+    if clojure -Spath -Sforce >/dev/null
+    then
+      echo "Clojure dependencies installed"
+    else
+      echo "Error during Clojure install"
+      exit 1
+    fi
+  fi
+
   # Hugo
   if [ -n "$HUGO_VERSION" ]
   then
@@ -700,6 +716,7 @@ cache_artifacts() {
 
   cache_cwd_directory ".venv" "python virtualenv"
   cache_cwd_directory ".build" "swift build"
+  cache_cwd_directory ".cpcache" "clojure classpath"
   cache_cwd_directory ".netlify/plugins" "build plugins"
   cache_cwd_directory ".netlify/rust-functions-cache" "Rust functions"
 
@@ -714,6 +731,7 @@ cache_artifacts() {
   cache_home_directory ".emacs.d" "emacs cache"
   cache_home_directory ".m2" "maven dependencies"
   cache_home_directory ".boot" "boot dependencies"
+  cache_home_directory ".gitlibs" "clojure git dependencies"
   cache_home_directory ".composer" "composer dependencies"
   cache_home_directory ".homebrew-cache", "homebrew cache"
   cache_home_directory ".rustup" "rust rustup cache"