This definitely works in Windows (a few Jenkins developers are Windows
users). It appears as though there's an issue with yarn being run as a
subprocess during the JavaScript "compilation" phase (i.e.,
uglify/minify/etc). Do you have a firewall blocking yarn from making
HTTP requests?

On Sun, Oct 13, 2019 at 2:25 AM Kalana Wijethunga
<[email protected]> wrote:
>
> Hi,
>
> I am a newbie to Jenkins who is looking to contribute Jenkins. I am having 
> some trouble in building the project for the first time. I am building 
> Jenkins [1] on windows by typing the command "mvn clean package -pl war -am 
> -DskipTests -Dfindbugs.skip" given in [2]. But there is a build failure on 
> Jenkins war. I get the error "This app can't run on your PC" from windows and 
> when i close that error, the build fails with the following error
> "[INFO] Running 'yarn --mutex network' in F:\open source\jenkins\war
> [ERROR] Access is denied."
> I am assuming that the project can be built on Windows, as you haven't 
> mentioned Ubuntu as prerequisite in building the project. I have tried 
> running the command prompt as an adminstrator as well. Looks like node and 
> yarn do not get permission to run command on the terminal. I have attached an 
> image of the error for further reference. Appreciate your help in resolving 
> this.
>
> [1]  https://github.com/jenkinsci/jenkins
> [2]  https://github.com/jenkinsci/jenkins/blob/master/CONTRIBUTING.md
>
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-- 
Matt Sicker
Senior Software Engineer, CloudBees

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