Hi,

You can try with the file attached.

You just need to run the following, considering `freecad.scm` is the attached file, and that you are in the folder that contains the file.
```
guix build -f freecad.scm
```

Like half an hour later, you'll get an output similar to this:

```
$ guix build -f freecad.scm
>>TONS OF COMPILATION RELATED NONSENSE<<
/gnu/store/74c1nrijb1x29pj9f94265zaq8frqf4f-freecad-0.19.1
```

That's the folder where the result of the build is. You can run that freecad using the path you got like this:

```
$ /gnu/store/74c1nrijb1x29pj9f94265zaq8frqf4f-freecad-0.19.1/bin/FreeCAD
```

Tell me if it works and how does it look.
If it works fine I'll send a patch to Guix with this package and you'll soon have it in Guix. Also, if you need it now, you can use the file I gave you and install it from there with the same -f trick, or even create an environment for it, that way it will be easier to run.

For any question you have, just ask.

Good luck!
Ekaitz