Eff.sc could not find "mvn" executable

[mkotsbak]

$ scala ~/progs/mvn2sbt/Eff.sc .
You are called "scala Eff ."
Creating .\dependencyTree.txt.
Exception in thread "Thread-0" java.io.IOException: Cannot run program "mvn" (in
directory "."): CreateProcess error=2, The system cannot find the file specifie
d
at java.lang.ProcessBuilder.start(ProcessBuilder.java:1048)
at scala.sys.process.ProcessBuilderImpl$Simple.run(ProcessBuilderImpl.sc
ala:69)
at scala.sys.process.ProcessImpl$PipedProcesses.runAndExitValue(ProcessI
mpl.scala:133)
at scala.sys.process.ProcessImpl$CompoundProcess$$anonfun$1.apply$mcV$sp
(ProcessImpl.scala:94)
at scala.sys.process.ProcessImpl$Spawn$$anon$1.run(ProcessImpl.scala:23)

Caused by: java.io.IOException: CreateProcess error=2, The system cannot find th
e file specified
at java.lang.ProcessImpl.create(Native Method)
at java.lang.ProcessImpl.(ProcessImpl.java:386)
at java.lang.ProcessImpl.start(ProcessImpl.java:137)
at java.lang.ProcessBuilder.start(ProcessBuilder.java:1029)
... 4 more
java.lang.RuntimeException: No exit code: process destroyed.
at scala.sys.process.ProcessImpl$CompoundProcess.exitValue(ProcessImpl.s
cala:88)
at scala.sys.process.ProcessBuilderImpl$AbstractBuilder.$bang(ProcessBui
lderImpl.scala:112)
at Main$$anon$1$$anonfun$1.apply(Eff.sc:40)

"mvn" is in the path:

$ which mvn
/c/apache-maven-3.2.3/bin/mvn

This is Cygwin (bundled with Git for windows)

[mkotsbak]

Same happens in a windows cmd.exe console.

[mkotsbak]

I found the cause (in http://stackoverflow.com/questions/6979155/cannot-run-scala-through-processbuilder).

It worked when i changed "mvn" to "mvn.bat". So to be portable it should either check the OS or if does not find "mvn" also try "mvn.bat".

[ajozwik]

Please verify the solution.

[mkotsbak]

It does not, but neither my workaround to hardcode "mvn.bat", so I suppose something weired has happened to my PATH here, but it correctly detected to use "mvn.bat", so if it works in UNIX like systems too, I guess we could assume that the problem should be solved.

[ajozwik]

Please write PR if you have more flexible solution. mvn command can be injected by argument. It depends on you.