Classpath bug re Clojure 1.10.1.645 when using Figwheel.Main

[Alan Thompson]

Hi.  Just helped a colleague debug a vexing problem on a CLJS project using Figwheel.Main.

If we do `brew install clojure/tools/clojure`, it works:

~/work/tmp810/xanadu > clj --help

Version: 1.10.1.561

Usage: clojure [dep-opt*] [--] [init-opt*] [main-opt] [arg*]

       clj     [dep-opt*] [--] [init-opt*] [main-opt] [arg*]

The clojure script is a runner for Clojure. clj is a wrapper

for interactive repl use. These scripts ultimately construct and

....

Note that local ./resources etc are at the beginning of the classpath

~/work/tmp810/xanadu > clj -Spath

resources:target:src/clj:src/cljc:src/cljs:test/cljs:test-figwheel-main:/Users/alanthompson/.m2/repository/com/cognitect/transit-java/0.8.332/transit-java-0.8.332.jar:/Users/alanthompson/.m2/repository/com/google/elemental2/elemental2-core/1.0.0-RC1/elemental2-core-1.0.0-RC1.jar:/Users/alanthompson/.m2/repository/org/clojure/data.json/0.2.6/data.json-0.2.6.jar:/Users/alanthompson/.m2/repository/org/clojure/clojure/1.10.1/clojure-1.10.1.jar:/Users/alanthompson/.m2/repository/day8/re-frame/test/0.1.5/test-0.1.5.jar:/Users/alanthompson/.m2/repository/commons-codec/commons-codec/1.11/commons-codec-1.11.jar:/Users/alanthompson/.m2/repository/cljsjs/material-ui-currency-textfield/0.8.6-0/material-ui-currency-textfield-0.8.6-0.jar:/Users/alanthompson/.m2/repository/org/clojure/tools.analyzer/1.0.0/tools.analyzer-1.0.0.jar:/Users/alanthompson/.m2/repository/com/bhauman/cljs-test-display/0.1.1/cljs-test-display-0.1.1.jar:/Users/alanthompson/.m2/repository/org/eclipse/jetty/jetty-xml/9.4.28.v20200408/jetty-xml-9.4.28.v20200408.jar:/Users/alanthompson/.m2/repository/com/bhauman/figwheel-repl/0.2.11/figwheel-repl-0.2.11.jar:/Users/alanthompson/.m2/repository/org/eclipse/jetty/jetty-servlet/9.4.28.v20200408/jetty-servlet-9.4.28.v20200408.jar:/Users/alanthompson/.m2/repository/ring/ring-devel/1.8.1/ring-devel-1.8.1.jar:/Users/alanthompson/.m2/repository/com/google/errorprone/error_prone_annotations/2.3.1/error_prone_annotations-2.3.1.jar:/Users/alanthompson/.m2/repository/org/clojure/tools.logging/0.3.1/tools.logging-0.3.1.jar:/Users/alanthompson/.m2/repository/org/clojure/core.specs.alpha/0.2.44/core.specs.alpha-0.2.44.jar:/Users/alanthompson/.m2/repository/co/deps/ring-etag-middleware/0.2.0/ring-etag-middleware-0.2.0.jar:/Users/alanthompson/.m2/repository/expound/expound/0.7.2/expound-0.7.2.jar:/Users/alanthompson/.m2/repository/org/clojure/spec.alpha/0.2.176/spec.alpha-0.2.176.jar:/Users/alanthompson/.m2/repository/com/cemerick/url/0.1.1/url-0.1.1.jar:

.....<snip>.....

However, my colleague had accidentally typed `brew install clojure`.  This caused a mysterious failure:

-------------------

~/work/tmp810/xanadu > clojure --help
Version: 1.10.1.645

You use the Clojure tools ('clj' or 'clojure') to run Clojure programs
on the JVM, e.g. to start a REPL or invoke a specific function with data.

....

and the classpath

-----------------

~/work/tmp810/xanadu > clj -Spath

DEPRECATED: Libs must be qualified, change deps-ancient => deps-ancient/deps-ancient (deps.edn)

DEPRECATED: Libs must be qualified, change reagent => reagent/reagent (deps.edn)

DEPRECATED: Libs must be qualified, change ns-tracker => ns-tracker/ns-tracker (deps.edn)

DEPRECATED: Libs must be qualified, change camel-snake-kebab => camel-snake-kebab/camel-snake-kebab (deps.edn)

DEPRECATED: Libs must be qualified, change bidi => bidi/bidi (deps.edn)

DEPRECATED: Libs must be qualified, change orchestra => orchestra/orchestra (deps.edn)

DEPRECATED: Libs must be qualified, change cljs-ajax => cljs-ajax/cljs-ajax (deps.edn)

DEPRECATED: Libs must be qualified, change expound => expound/expound (deps.edn)

DEPRECATED: Libs must be qualified, change re-frame => re-frame/re-frame (deps.edn)

DEPRECATED: Libs must be qualified, change re-frame-utils => re-frame-utils/re-frame-utils (deps.edn)

DEPRECATED: Libs must be qualified, change cljs-bean => cljs-bean/cljs-bean (deps.edn)

/Users/alanthompson/.m2/repository/alandipert/storage-atom/1.2.4/storage-atom-1.2.4.jar:/Users/alanthompson/.m2/repository/com/google/errorprone/error_prone_annotations/2.3.1/error_prone_annotations-2.3.1.jar:/Users/alanthompson/.m2/repository/org/clojure/core.cache/1.0.207/core.cache-1.0.207.jar:/Users/alanthompson/.m2/repository/com/google/jsinterop/jsinterop-annotations/1.0.2/jsinterop-annotations-1.0.2.jar:/Users/alanthompson/.m2/repository/compliment/compliment/0.3.6/compliment-0.3.6.jar:/Users/alanthompson/.m2/repository/ring/ring-headers/0.3.0/ring-headers-0.3.0.jar:/Users/alanthompson/.m2/repository/cljs-bean/cljs-bean/1.4.0/cljs-bean-1.4.0.jar:/Users/alanthompson/.m2/repository/hawk/hawk/0.2.11/hawk-0.2.11.jar:/Users/alanthompson/.m2/repository/binaryage/devtools/1.0.0/devtools-1.0.0.jar:/Users/alanthompson/.m2/repository/org/eclipse/jetty/websocket/websocket-api/9.4.28.v20200408/websocket-api-9.4.28.v20200408.jar:/Users/alanthompson/.m2/repository/org/apache/httpcomponents/httpasyncclient/4.1.3/httpasyncclient-4.1.3.jar:/Users/alanthompson/.m2/repository/org/checkerframework/checker-qual/2.0.0/checker-qual-2.0.0.jar:/Users/alanthompson/.m2/repository/ns-tracker/ns-tracker/0.3.1/ns-tracker-0.3.1.jar:/Users/alanthompson/.m2/repository/cljsjs/react-select/2.4.4-0/react-select-2.4.4-0.jar:/Users/alanthompson/.m2/repository/org/javassist/javassist/3.18.1-GA/javassist-3.18.1-GA.jar:/Users/alanthompson/.m2/repository/com/google/protobuf/protobuf-java/3.11.1/protobuf-java-3.11.1.jar:/Users/alanthompson/.m2/repository/org/fusesource/jansi/jansi/1.16/jansi-1.16.jar:/Users/alanthompson/.m2/repository/com/cognitect/transit-clj/0.8.309/transit-clj-0.8.309.jar:/Users/alanthompson/.m2/repository/org/codehaus/mojo/animal-sniffer-annotations/1.14/animal-sniffer-annotations-1.14.jar:/Users/alanthompson/.m2/repository/org/apache/httpcomponents/httpclient/4.5.3/httpclient-4.5.3.jar:test-figwheel-main:/Users/alanthompson/.m2/repository/com/cognitect/transit-cljs/0.8.256/transit-cljs-0.8.256.jar:

.....<snip>.....

:/Users/alanthompson/.m2/repository/zprint/zprint/0.5.1/zprint-0.5.1.jar:resources:/Users/alanthompson/.m2/repository/org/clojure/tools.analyzer/1.0.0/tools.analyzer-1.0.0.jar:/Users/alanthompson/.m2/repository/re-frame/re-frame/0.10.5/re-frame-0.10.5.jar:/Users/alanthompson/.m2/repository/rewrite-cljs/rewrite-cljs/0.4.4/rewrite-cljs-0.4.4.jar:/Users/alanthompson/.m2/repository/net/cgrand/macrovich/0.2.0/macrovich-0.2.0.jar:/Users/alanthompson/.m2/repository/org/clojure/clojurescript/1.10.764/clojurescript-1.10.764.jar:/Users/alanthompson/.m2/repository/com/google/elemental2/elemental2-core/1.0.0-RC1/elemental2-core-1.0.0-RC1.jar:/Users/alanthompson/.m2/repository/org/eclipse/jetty/jetty-client/9.4.28.v20200408/jetty-client-9.4.28.v20200408.jar

with `resources` nearly at the end!  This breaks Figwheel.Main, which cannot find `index.html` correctly and puts up a bogus webpage of 2 words:

Debux Test

which I assume is due to finding some other `index.html` earlier on the classpath.

Questions:

1. What is the difference between the brew targets `clojure` and `clojure/tools/clojure`?  Can these be unified somehow? It seems error-prone as-is.
2. I assume the classpath change in 1.10.1.645 is a bug that needs to be corrected?
3. Is it possible this is a Figwheel.Main problem instead?

Thanks,

Alan

[Alan Thompson]

P.S.  There seems to be no `clojure --version` flag.  Should this be added to the command line tool?