Feature for fricas

[mkoeppe]

CC: @orlitzky @tornaria @seblabbe

Component: interfaces

Keywords: FriCAS

Branch/Commit: u/mkoeppe/feature_for_axiom @ 73ad696

Issue created by migration from https://trac.sagemath.org/ticket/33575

[mkoeppe]

Branch: u/mkoeppe/feature_for_axiom

[mkoeppe]

Commit: 73ad696

[mkoeppe]

comment:3

An issue is that currently Sage creates an instance of the FriCAS interface as part of loading sage.interfaces.all. This now fails:

  File "/Users/mkoeppe/s/sage/sage-rebasing/worktree-gcc11/src/sage/interfaces/fricas.py", line 291, in __init__
    fricas_exe = FriCASExecutable().absolute_filename()
  File "/Users/mkoeppe/s/sage/sage-rebasing/worktree-gcc11/src/sage/features/__init__.py", line 615, in absolute_filename
    raise FeatureNotPresentError(self,
sage.features.FeatureNotPresentError: fricas_exe is not available.
Executable 'fricas' not found on PATH.
No equivalent system packages for homebrew are known to Sage.
To install fricas_exe using the Sage package manager, you can try to run:
  !sage -i fricas
No equivalent system packages for pip are known to Sage.

---

New commits:

73ad696

src/sage/features/interfaces.py: Add FriCASExecutable, FriCAS

[mantepse]

Changed keywords from none to FriCAS

[seblabbe]

comment:6

needs review?