Avoid passing .gitkeep files to Claritas

[Aeris1One]

I have a CI job running from my git repo, so we just need to push updates of mods and github actions build the new distro and commit it. The only problem is when we have for exemple no optionaloff mods, so the folder is empty.
Nebula crashs when any required folder is not present and as Git doesn't like committing empty folders we had to add a .gitkeep file to each empty folder so they are commited. Nebula think they're mods and pass them to Claritas and seems to be the cause of a crash.

[2021-04-06 10:58:01] [info] [Claritas]: 10:58:01.924 [main] INFO com.dscalzi.claritas.Main - Pulling arguments from argFile at /home/runner/work/Distribution/Distribution/servers/MineCityLifeRP-1.7.10/claritasWork/claritasArgFile.txt
[2021-04-06 10:58:02] [info] [Claritas]: 10:58:02.007 [main] DEBUG com.dscalzi.claritas.Main - TYPE       = FORGE
[2021-04-06 10:58:02] [info] [Claritas]: 10:58:02.008 [main] DEBUG com.dscalzi.claritas.Main - MC VERSION = 1.7.10
[2021-04-06 10:58:02] [info] [Claritas]: 10:58:02.008 [main] DEBUG com.dscalzi.claritas.Main - JAR PATHS  = [/home/runner/work/Distribution/Distribution/servers/MineCityLifeRP-1.7.10/forgemods/required/.gitkeep, /home/runner/work/Distribution/Distribution/servers/MineCityLifeRP-1.7.10/forgemods/optionalon/.gitkeep, /home/runner/work/Distribution/Distribution/servers/MineCityLifeRP-1.7.10/forgemods/optionaloff/.gitkeep]
[2021-04-06 10:58:02] [info] [Claritas]: 10:58:02.009 [main] DEBUG com.dscalzi.claritas.Main - OUTPUT     = /home/runner/work/Distribution/Distribution/servers/MineCityLifeRP-1.7.10/claritasWork/claritasOutput.json
[2021-04-06 10:58:02] [info] [Claritas]: 10:58:02.026 [main] ERROR com.dscalzi.claritas.discovery.LibraryAnalyzer - IOException while opening jar file.
java.util.zip.ZipException: zip file is empty
	at java.base/java.util.zip.ZipFile$Source.zerror(ZipFile.java:1581)
	at java.base/java.util.zip.ZipFile$Source.findEND(ZipFile.java:1389)
	at java.base/java.util.zip.ZipFile$Source.initCEN(ZipFile.java:1483)
	at java.base/java.util.zip.ZipFile$Source.<init>(ZipFile.java:1288)
	at java.base/java.util.zip.ZipFile$Source.get(ZipFile.java:1251)
	at java.base/java.util.zip.ZipFile$CleanableResource.<init>(ZipFile.java:732)
	at java.base/java.util.zip.ZipFile$CleanableResource.get(ZipFile.java:849)
	at java.base/java.util.zip.ZipFile.<init>(ZipFile.java:247)
	at java.base/java.util.zip.ZipFile.<init>(ZipFile.java:177)
	at java.base/java.util.zip.ZipFile.<init>(ZipFile.java:148)
	at com.dscalzi.claritas.discovery.LibraryAnalyzer.analyze(LibraryAnalyzer.java:69)
	at com.dscalzi.claritas.Main.main(Main.java:91)
[2021-04-06 10:58:02] [info] [Claritas]: 10:58:02.026 [main] ERROR com.dscalzi.claritas.discovery.LibraryAnalyzer - IOException while opening jar file.
java.util.zip.ZipException: zip file is empty
	at java.base/java.util.zip.ZipFile$Source.zerror(ZipFile.java:1581)
	at java.base/java.util.zip.ZipFile$Source.findEND(ZipFile.java:1389)
	at java.base/java.util.zip.ZipFile$Source.initCEN(ZipFile.java:1483)
	at java.base/java.util.zip.ZipFile$Source.<init>(ZipFile.java:1288)
	at java.base/java.util.zip.ZipFile$Source.get(ZipFile.java:1251)
	at java.base/java.util.zip.ZipFile$CleanableResource.<init>(ZipFile.java:732)
	at java.base/java.util.zip.ZipFile$CleanableResource.get(ZipFile.java:849)
	at java.base/java.util.zip.ZipFile.<init>(ZipFile.java:247)
	at java.base/java.util.zip.ZipFile.<init>(ZipFile.java:177)
	at java.base/java.util.zip.ZipFile.<init>(ZipFile.java:148)
	at com.dscalzi.claritas.discovery.LibraryAnalyzer.analyze(LibraryAnalyzer.java:69)
	at com.dscalzi.claritas.Main.main(Main.java:91)
[2021-04-06 10:58:02] [info] [Claritas]: 10:58:02.028 [main] ERROR com.dscalzi.claritas.discovery.LibraryAnalyzer - IOException while opening jar file.
java.util.zip.ZipException: zip file is empty
	at java.base/java.util.zip.ZipFile$Source.zerror(ZipFile.java:1581)
	at java.base/java.util.zip.ZipFile$Source.findEND(ZipFile.java:1389)
	at java.base/java.util.zip.ZipFile$Source.initCEN(ZipFile.java:1483)
	at java.base/java.util.zip.ZipFile$Source.<init>(ZipFile.java:1288)
	at java.base/java.util.zip.ZipFile$Source.get(ZipFile.java:1251)
	at java.base/java.util.zip.ZipFile$CleanableResource.<init>(ZipFile.java:732)
	at java.base/java.util.zip.ZipFile$CleanableResource.get(ZipFile.java:849)
	at java.base/java.util.zip.ZipFile.<init>(ZipFile.java:247)
	at java.base/java.util.zip.ZipFile.<init>(ZipFile.java:177)
	at java.base/java.util.zip.ZipFile.<init>(ZipFile.java:148)
	at com.dscalzi.claritas.discovery.LibraryAnalyzer.analyze(LibraryAnalyzer.java:69)
	at com.dscalzi.claritas.Main.main(Main.java:91)
[2021-04-06 10:58:02] [info] [Claritas]: 10:58:02.244 [main] INFO com.dscalzi.claritas.Main - Result saved to /home/runner/work/Distribution/Distribution/servers/MineCityLifeRP-1.7.10/claritasWork/claritasOutput.json
[2021-04-06 10:58:02] [info] [Claritas]: results::{}
[2021-04-06 10:58:02] [info] [Claritas]: 
[2021-04-06 10:58:02] [info] [Claritas]: Exited with code 0
[2021-04-06 10:58:02] [error] [Index]: Failed to generate distribution with root /home/runner/work/Distribution/Distribution. 
Error: Archive read error
    at FsRead.readUntilFoundCallback [as callback] (/home/runner/work/Distribution/Distribution/Nebula/node_modules/node-stream-zip/node_stream_zip.js:179:46)
    at FsRead.readCallback (/home/runner/work/Distribution/Distribution/Nebula/node_modules/node-stream-zip/node_stream_zip.js:992:25)
    at tick (fs.js:523:7)
    at processTicksAndRejections (internal/process/task_queues.js:75:11)

Is it possible to avoid .gitkeep files to be understood by Nebula as mod files ?

[Aeris1One]

Changed my workflow so it removes all .gitkeep files, then run Nebula then readd .gitkeep files in all empty dirs.
Would be great if Nebula ignore them though

[dscalzi]

should be easy enough

[dscalzi]

I'll have something for you later today