Downsides: Lost flexibility / ability to easily update (eg, you won't be able to easily update your Julia or those precompiled packages)
Just because this might not be obvious to a beginner: this lost flexibility is only when using that particular sysimage. Your normal Julia is also still available, and there all packages can still be updated as and when needed.
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Just because this might not be obvious to a beginner: this lost flexibility is only when using that particular sysimage. Your normal Julia is also still available, and there all packages can still be updated as and when needed.