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https://issues.apache.org/jira/browse/SUREFIRE-1802?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17141043#comment-17141043
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Tibor Digana commented on SUREFIRE-1802:
----------------------------------------

[~hboutemy] Does it make sense to debug {{maven-shde-plugin}} when the build is 
running?

The sources can be influenced by the local Git.
Here is the list of properties, excluding my private info and branches, after 
commands
git config --list --system
git config --list --global
git config --list --local

http.sslbackend=openssl
http.sslcainfo=C:/Program Files/Git/mingw64/ssl/certs/ca-bundle.crt
credential.helper=manager
core.repositoryformatversion=0
core.filemode=false
core.bare=false
core.logallrefupdates=true
core.symlinks=false
core.ignorecase=true
remote.origin.url=https://gitbox.apache.org/repos/asf/maven-surefire
remote.origin.fetch=+refs/heads/*:refs/remotes/origin/*
branch.master.remote=origin
branch.master.merge=refs/heads/master
gui.wmstate=zoomed
gui.geometry=1596x828+573+44 796 476
credential.helper=manager
core.longpaths=true
filesystem.Oracle Corporation|12|1915587054.timestampresolution=1001 
microseconds
filesystem.Oracle Corporation|12|1915587054.minracythreshold=0 nanoseconds
winupdater.recentlyseenversion=2.24.0.windows.2

> improve Reproducible Builds after Surefire 3.0.0-M5 release
> -----------------------------------------------------------
>
>                 Key: SUREFIRE-1802
>                 URL: https://issues.apache.org/jira/browse/SUREFIRE-1802
>             Project: Maven Surefire
>          Issue Type: Improvement
>    Affects Versions: 3.0.0-M5
>            Reporter: Herve Boutemy
>            Priority: Minor
>
> Surefire 3.0.0-M5 was released with build enhancements that sould make the 
> build reproducible: results are good but not perfect
> the good part: the release manager (Tibor) is able to rebuild on his local 
> environment and get the full set of artifacts exactly as they are published 
> to Central
> the not perfect part: trying to reproduce independantly shows a few issues 
> that are build with a little difference to the reference artifacts from 
> Central
> see [https://github.com/jvm-repo-rebuild/reproducible-central] for automated 
> rebuild script, that when run on my own machine give followinf results: 
> [https://github.com/jvm-repo-rebuild/reproducible-central/blob/master/content/org/apache/maven/surefire/surefire-shared-utils-3.0.0-M5.buildinfo.compare]
>  * the build produces 45 artifacts exactly like reference in Central
>  * 5 artifacts are not produced exactly like the reference in Central:
>  ** surefire-shadefire-3.0.0-M5.jar
>  ** maven-surefire-plugin-3.0.0-M5.jar
>  ** maven-failsafe-plugin-3.0.0-M5.jar
>  ** maven-surefire-plugin-3.0.0-M5-sources.jar
>  ** maven-failsafe-plugin-3.0.0-M5-sources.jar
> We need to investigate how to make the build more independant from the 
> environment, discovering how the environment impacts
> First level of investigation shows that there are 2 issues: SUREFIRE-1803 
> (DEPENDENCIES) and SUREFIRE-1804 (shading)
> and one additional nice to have MASFRES-34 (dependency-reduced-pom.xml)



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