John O'Shaughnessy comments

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                                            John O'Shaughnessy

[Problem] (qt.qpa.fonts) Populating font family aliases took 142 ms. Replace uses of missing font family "Courier" with one that exists to avoid this cost.

@obelisk79 -- Any thoughts on this?

[Problem] (qt.qpa.fonts) Populating font family aliases took 142 ms. Replace uses of missing font family "Courier" with one that exists to avoid this cost.

> Therefore could you please volunteer a default monospace fallback font for Mac's (it has to appear in Preferences>Python>Editor>Family combobox) May I suggest `Courier New`? It shows up as `Courier...

[Problem] (qt.qpa.fonts) Populating font family aliases took 142 ms. Replace uses of missing font family "Courier" with one that exists to avoid this cost.

> Related: > > * [Use Qt built-in to determine the system's preferred fixed-width font #17275](https://github.com/FreeCAD/FreeCAD/pull/17275) Yes -- noticed that. I hope to test that PR on a self-built FreeCAD...

[Problem] (qt.qpa.fonts) Populating font family aliases took 142 ms. Replace uses of missing font family "Courier" with one that exists to avoid this cost.

I wonder if the underlying issue is that `Courier` on macOS is no longer supplied by default as a TTF file, and instead as a TTC (font family) file. As...

[Problem] (qt.qpa.fonts) Populating font family aliases took 142 ms. Replace uses of missing font family "Courier" with one that exists to avoid this cost.

> See [#21710](https://github.com/FreeCAD/FreeCAD/pull/21710) (although the solution is to blacklist the font) and [@spkane](https://github.com/spkane) found that simply installing the missing font or renaming the font. On macOS, the font isn't missing...

[Problem] (qt.qpa.fonts) Populating font family aliases took 142 ms. Replace uses of missing font family "Courier" with one that exists to avoid this cost.

> I believe the reason the QT library is calling that error is because FreeCAD is calling for a specific non-existent font instead of calling for a font-family that is...

[Problem] (qt.qpa.fonts) Populating font family aliases took 142 ms. Replace uses of missing font family "Courier" with one that exists to avoid this cost.

@leematos From the little bit of testing I've done, it seems like FreeCAD is using some older QT font calls that no longer work to find fonts on modern macOS....