Tensegritics / Tensegritics/ClojureDart

Watch process crashing on file change

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Dominant language
Clojure
Stars
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Forks
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Description

I run the watch command from the tutorial:

clj -M -m cljd.build flutter

Platform: MacOS 11.6
Java: openjdk 17.0.1 2021-10-19 LTS
Clojure CLI version: 1.11.1.1107

Then after any changes to .cljd file I got the process crash:

{:clojure.main/message
 "Execution error (IOException) at java.lang.ProcessBuilder$NullOutputStream/write (ProcessBuilder.java:442).\nStream closed\n",
 :clojure.main/triage
 {:clojure.error/class java.io.IOException,
  :clojure.error/line 442,
  :clojure.error/cause "Stream closed",
  :clojure.error/symbol
  java.lang.ProcessBuilder$NullOutputStream/write,
  :clojure.error/source "ProcessBuilder.java",
  :clojure.error/phase :execution},
 :clojure.main/trace
 {:via
  [{:type java.io.IOException,
    :message "Stream closed",
    :at
    [java.lang.ProcessBuilder$NullOutputStream
     write
     "ProcessBuilder.java"
     442]}],
  :trace
  [[java.lang.ProcessBuilder$NullOutputStream
    write
    "ProcessBuilder.java"
    442]
   [java.io.OutputStream write "OutputStream.java" 157]
   [java.io.BufferedOutputStream
    flushBuffer
    "BufferedOutputStream.java"
    81]
   [java.io.BufferedOutputStream flush "BufferedOutputStream.java" 142]
   [sun.nio.cs.StreamEncoder implFlush "StreamEncoder.java" 318]
   [sun.nio.cs.StreamEncoder flush "StreamEncoder.java" 153]
   [java.io.OutputStreamWriter flush "OutputStreamWriter.java" 251]
   [cljd.build$compile_cli$compile_files__6707$fn__6708
    invoke
    "build.clj"
    218]
   [cljd.build$watch_dirs invokeStatic "build.clj" 56]
   [cljd.build$watch_dirs invoke "build.clj" 24]
   [cljd.build$compile_cli invokeStatic "build.clj" 236]
   [cljd.build$compile_cli doInvoke "build.clj" 175]
   [clojure.lang.RestFn invoke "RestFn.java" 457]
   [cljd.build$_main invokeStatic "build.clj" 373]
   [cljd.build$_main doInvoke "build.clj" 346]
   [clojure.lang.RestFn applyTo "RestFn.java" 137]
   [clojure.lang.Var applyTo "Var.java" 705]
   [clojure.core$apply invokeStatic "core.clj" 665]
   [clojure.main$main_opt invokeStatic "main.clj" 514]
   [clojure.main$main_opt invoke "main.clj" 510]
   [clojure.main$main invokeStatic "main.clj" 664]
   [clojure.main$main doInvoke "main.clj" 616]
   [clojure.lang.RestFn applyTo "RestFn.java" 137]
   [clojure.lang.Var applyTo "Var.java" 705]
   [clojure.main main "main.java" 40]],
  :cause "Stream closed"}}


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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Reproduce the failure with clj -M -m cljd.build flutter on a project containing a .cljd file, then inspect build.clj at the compile_cli and watch_dirs locations shown in the trace, especially line 218. Done means the watch process remains running and handles a .cljd file change without the reported Stream closed crash.

Written by the indexing model from the issue text.

Assessment

Tech stack
dart, flutter
Domain
build-system, cli
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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