Fix #1661: follow symlink when reading adjacent bb.edn (#1663)

CHANGELOG.md

@@ -11,6 +11,7 @@ A preview of the next release can be installed from
 
 - [#1660](https://github.com/babashka/babashka/issues/1660): add `:deps-root` as part of hash to avoid caching issue with `deps.clj`
 - [#1632](https://github.com/babashka/babashka/issues/1632): fix `(.readPassword (System/console))` by upgrading GraalVM to `21.0.2`
+- [#1661](https://github.com/babashka/babashka/issues/1661): follow symlink when reading adjacent bb.edn
 
 ## 1.3.188 (2023-01-12)
 

appveyor.yml

@@ -23,6 +23,9 @@ cache:
 
 clone_script:
 - cmd: git config --global core.autocrlf true
+
+- cmd: git config --global core.symlinks true
+
 - ps: >-
     if(-not $env:APPVEYOR_PULL_REQUEST_NUMBER) {
       git clone -q --branch=$env:APPVEYOR_REPO_BRANCH https://github.com/$env:APPVEYOR_REPO_NAME.git $env:APPVEYOR_BUILD_FOLDER
@@ -36,6 +39,8 @@ clone_script:
     }
 - cmd: git submodule update --init --recursive
 
+- cmd: git reset --hard
+
 build_script:
 # TODO: Extract the zip by removing the top level folder to remove the hardcoded path for GRAALVM_HOME
 - cmd: >-

src/babashka/main.clj

@@ -1140,29 +1140,36 @@ Use bb run --help to show this help output.
                         (catch Exception _ false))
                bin))))))
 
+(defn resolve-symbolic-link [f]
+  (if (and f (fs/exists? f))
+    (str (fs/real-path f))
+    f))
+
 (defn main [& args]
   (let [bin-jar (binary-invoked-as-jar)
         args (if bin-jar
                (list* "--jar" bin-jar "--" args)
                args)
         [args opts] (parse-global-opts args)
-        [args {:keys [jar file config merge-deps debug] :as opts}]
+        [args {:keys [config merge-deps debug] :as opts}]
         (if-not (or (:file opts)
                     (:jar opts))
           (parse-file-opt args opts)
           [args opts])
-        ;; _ (prn :args args :opts opts)
-        abs-path #(-> % io/file .getAbsolutePath)
+        {:keys [jar file]} opts
+        abs-path resolve-symbolic-link
         config (cond
                  config (if (fs/exists? config) (abs-path config)
                             (when debug
                               (binding [*out* *err*]
                                 (println "[babashka] WARNING: config file does not exist:" config))
                               nil))
-                 jar (some-> [jar] cp/new-loader (cp/resource "META-INF/bb.edn") .toString)
+                 jar (let [jar (resolve-symbolic-link jar)]
+                       (some-> [jar] cp/new-loader (cp/resource "META-INF/bb.edn") .toString))
                  :else (if (and file (fs/exists? file))
                          ;; file relative to bb.edn
-                         (let [rel-bb-edn (fs/file (fs/parent file) "bb.edn")]
+                         (let [file (abs-path file) ;; follow symlink
+                               rel-bb-edn (fs/file (fs/parent file) "bb.edn")]
                            (if (fs/exists? rel-bb-edn)
                              (abs-path rel-bb-edn)
                              ;; fall back to local bb.edn

test-resources/symlink-adjacent-bb

@@ -0,0 +1 @@
+adjacent_bb/medley.bb

test/babashka/bb_edn_test.clj

@@ -8,8 +8,7 @@
    [borkdude.deps]
    [clojure.edn :as edn]
    [clojure.string :as str]
-   [clojure.test :as test :refer [deftest is testing]]
-   [babashka.test-utils :as tu]))
+   [clojure.test :as test :refer [deftest is testing]]))
 
 (defn bb [& args]
   (let [args (map str args)
@@ -321,7 +320,7 @@
   (testing "call to run in missing dir gives 'cannot run program' message"
     (test-utils/with-config
       (pr-str '{:tasks {foo (clojure {:dir "../missingdir"} "-M" "-r")}})
-      ; check rough text of error message, specific message about missing directory is OS-dependent
+      ;; check rough text of error message, specific message about missing directory is OS-dependent
       (is (thrown-with-msg? Exception #"Cannot run program .* \(in directory \"\.\.[/\\]missingdir\"\)"
                             (bb "run" "foo"))))))
 
@@ -410,7 +409,7 @@ even more stuff here\"
             entries (cp/split-classpath out)
             entry (first entries)]
         (is (= 1 (count entries)))
-        (is (= (fs/parent config) (fs/parent entry)))
+        (is (= (fs/real-path (fs/parent config)) (fs/real-path (fs/parent entry))))
         (is (str/ends-with? entry "src"))))))
 
 (deftest without-deps-test
@@ -514,7 +513,7 @@ even more stuff here\"
       (testing "default deps-root path is same as bb.edn"
         (let [out (bb "--config" config "cp")
               entries (cp/split-classpath out)]
-          (is (= (fs/parent f) (fs/parent (first entries))))))
+          (is (= (fs/real-path(fs/parent f)) (fs/real-path (fs/parent (first entries)))))))
       (spit config
             '{:paths ["src"]
               :deps {local/dep {:local/root "local-dep"}}
@@ -524,11 +523,13 @@ even more stuff here\"
               _ (spit (str (fs/file root "deps.edn")) {})
               out (bb "--config" config "cp")
               entries (cp/split-classpath out)]
-          (is (= (fs/parent f) (fs/parent (first entries)))))))))
+          (is (= (fs/real-path (fs/parent f)) (fs/real-path (fs/parent (first entries))))))))))
 
 (deftest adjacent-bb-edn-test
   (is (= {1 {:id 1}} (bb "test-resources/adjacent_bb/medley.bb")))
-  (is (= {1 {:id 1}} (bb "-f" "test-resources/adjacent_bb/medley.bb"))))
+  (is (= {1 {:id 1}} (bb "-f" "test-resources/adjacent_bb/medley.bb")))
+  (testing "symlink"
+    (is (= {1 {:id 1}} (bb (str (fs/file "test-resources" "symlink-adjacent-bb")))))))
 
 (deftest non-existing-tasks-in-run-gives-exit-code-1
   (is (thrown? Exception (bb "-Sdeps" "{:tasks {foo {:task (run (quote bar))}}}" "foo"))))
@@ -537,6 +538,6 @@ even more stuff here\"
   (is (= 6 (bb "-Sdeps" "" "-e" "(+ 1 2 3)"))))
 
 (deftest warning-on-override-task
-  (when-not tu/native?
+  (when-not test-utils/native?
     (binding [*out* *err*]
       (is (str/includes? (with-out-str (bb "-Sdeps" "{:tasks {run {:task 1}}}" "run")) "'run' override")))))