https://bugs.kde.org/show_bug.cgi?id=470381
Bug ID: 470381
Summary: Julia backend does not allow symlinked executable
Classification: Applications
Product: cantor
Version: 23.04.1
Platform: NixOS
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: julia-backend
Assignee: cantor-b...@kde.org
Reporter: hqu...@outlook.com
Target Milestone: ---
SUMMARY
If the julia executable on your path is a symlink, the julia backend cannot be
chosen.
STEPS TO REPRODUCE
1. Have the julia executable on your path be a symlink (eg install through nix)
2. Launch cantor
3. Attempt to open with julia backend
OBSERVED RESULT
The following message is displayed:
```
Some requirements are not fulfilled: The path to Julia specified in the
application settings must point directly to the executable. Symlinks are not
allowed. Please provide the correct path in the application settings and try
again.
```
EXPECTED RESULT
Julia backend can be selected
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: nixos unstable
(available in About System)
KDE Plasma Version: 5.27.5
KDE Frameworks Version: 5.106.0
Qt Version: 5.15.9
ADDITIONAL INFORMATION
By searching the code, symlinks are only prevented in the julia backend. The
logic exists in this file
https://invent.kde.orghttps://invent.kde.org/education/cantor/-/blob/d5121b245973f1e70949828d6a98e4bf0cfd6ff9/src/backends/julia/juliabackend.cpp#L84
and (I think) the logic was first introduced in
https://invent.kde.org/education/cantor/-/commit/1e144559c034ff70b23b3d6b5c1b7b28dbf8af18
By building cantor with the logic removed, the julia backend works. However, I
am unsure if this is suitable since I do not know why symlinks are prevented.
Also, I am asking since I wish to also patch out this logic in the nixpkgs
package for cantor in order for the cantor julia backend to work.
https://github.com/NixOS/nixpkgs/pull/234479/files#diff-b1d95328883e905223e5671936ca77425773b2f4a2f7293311a5cb1a37c76e95
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