Fix location in bootstrap code

[sungshik]

I was using module Bootstrap (in the context of #2083), but the generated parser wasn't written to the expected/existing file. Thought I'd fix it in this separate PR first (i.e., there are some other unexpected bootstrap diffs in #2083, but their severity/timeline-to-fix isn't clear yet).

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 49%. Comparing base (3329554) to head (6652bc0).
Report is 4 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##              main   #2090   +/-   ##
=======================================
  Coverage       49%     49%           
+ Complexity    6328    6319    -9     
=======================================
  Files          666     666           
  Lines        59687   59687           
  Branches      8670    8670           
=======================================
+ Hits         29610   29611    +1     
- Misses       27839   27841    +2     
+ Partials      2238    2235    -3     

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[DavyLandman]

I'm not familiar with this code enough to know if this is the right fix. @jurgenvinju would be better for this.

My hunch would be: are we sure that the rascalHome variable shouldn't just point to this sub-directory?

[sungshik]

I don't know for sure either. There is some precedent in the same module, though:

rascal/src/org/rascalmpl/library/lang/rascal/grammar/Bootstrap.rsc

Line 32 in 6652bc0

gr = getRascalGrammar(rascalHome + "src/org/rascalmpl/library/lang/rascal/syntax/Rascal.rsc");

rascal/src/org/rascalmpl/library/lang/rascal/grammar/Bootstrap.rsc

Line 39 in 6652bc0

gr = getRascalGrammar(rascalHome + "src/org/rascalmpl/library/lang/rascal/syntax/Rascal.rsc");

rascal/src/org/rascalmpl/library/lang/rascal/grammar/Bootstrap.rsc

Line 63 in 6652bc0

grammarToJavaAPI(rascalHome + "src/org/rascalmpl/ast", "org.rascalmpl.ast", g);

[jurgenvinju]

It's whatever we need it to be. So thanks!