Avoid duplicate state entries (by avoiding symlink evaluation) #699
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We use module paths in many different places and this ensures we will compare the same paths consistently and avoid duplicate entries in memdb.
There is unfortunately no easy way to test this as the potential problem would arise as part of a module operation which is executed asynchronously, and/or when publishing diagnostics, which is in itself hard to test currently.
This bug is more visible in #714 and #700 when you open a folder that has symlink somewhere in the path.
We will likely re-evaluate this decision more holistically (in the context of the whole codebase) in #241