Java classes of dependencies aren't loaded when they're open in the workspace

[sungshik]

Scope (branches)

• Rascal: replace-lib-by-mvn-and-others (Replace lib:/// scheme by mvn:/// and file:/// and jar+file:/// everywhere rascal#1969)
• Rascal LSP: replace-lib-scheme (testing rascal without the lib scheme #454)

Problem

Background

• Which versions of projects are loaded in the REPL? #537

Situation

• Projects p and q are open in the workspace.
• p has a dependency on q (declared in its POM)
• p, q ∉ {rascal, rascal-lsp}
• A REPL is created in p.

Expected

Both the Rascal modules and the Java classes of q should be loaded from the version in the workspace.

Actual

• ✔️ The Rascal modules of q are loaded from the version in the workspace.
• ⛔ The Java classes of q aren't loaded at all (not from any version).

Preliminary analysis

• Only the target folder of p is on the classpath of the REPL, but not the target folder of q.
• If q isn't open in the workspace, then its Java classes are loaded from the version in the local Maven repository (declared in its POM), as expected.

[sungshik]

Fixed in usethesource/rascal#2094