Without knowing the details of Guava, I recently had to install and use the
GAP `forms` package. It was a little tricky to load it properly using
gap.eval, but what ended up working better was libgap,
libgap.LoadPackage(“forms”)
and you can check the Boolean return type to see if it loaded properly.
HTH,
Jackson
On Sat, Dec 7, 2024 at 9:51 AM ETAL <amalsed...@gmail.com> wrote:
> Hello,
>
> I am experiencing an issue using the Guava package in SageMath 10.3 with
> GAP 4.12.2 installed on my system. The strange part is that *Guava works
> when I use the GAP console inside Sage*, but it doesn't work when I try
> to load it through Sage directly.
> The Issue:
>
> - *SageMath Version*: 10.3
> - *GAP Version*: 4.12.2
> - *Problem*: I can successfully load Guava when I open GAP via Sage’s
> gap.console(), but *when I try to load it directly from Sage*, I get
> an error. I have set the path to the external GAP binary in Sage, but this
> doesn’t seem to fix the issue.
>
> What I Tried:
>
> 1.
>
> *Changing GAP Binaries*: I set the path to the external GAP binary
> (installed on my system) by updating the SAGE_GAP_BINARY environment
> variable and running source ~/.bashrc.
> - Command: export SAGE_GAP_BINARY="/usr/local/bin/gap"
> 2.
>
> *Setting Sage to Use My GAP*:
> - I added the following to my Sage configuration to ensure Sage uses
> my installed GAP version:
> import sage.interfaces.gap sage.interfaces.gap.gap_cmd =
> "/usr/local/bin/gap"
> 3.
>
> *Trying to Load Guava*:
> - After setting the gap_cmd correctly, I attempted to load the Guava
> package using the following command within Sage:
> gap.eval('LoadPackage("Guava");')
>
> *Error Output*:
> 'fail'
> 4.
>
> *Direct GAP Console Access*:
> - When I open GAP directly via the terminal (not through Sage), and
> run LoadPackage("Guava");, it works fine, loading the package without
> any
> issues.
> 5.
>
> *Trying GAP Console from Inside Sage*:
> - When I use the following code to launch GAP inside Sage:
> gap.console()
>
> *Guava loads without any errors*.
> 6.
>
> *Attempting Additional GAP Functions*:
> - I attempted using
> DirectoriesPackageLibrary("/home/seddas/gap-4.12.2/pkg/guava"), but it
> returns an empty list ('[ ]').
> - I also tried using SetPackagePath("/home/seddas/gap-4.12.2/pkg")
> to set the correct path, but the issue persists.
> 7.
>
> *Reinstalling Guava*:
> - I double-checked the installation and directory structure, and Guava
> seems to be installed correctly in /home/seddas/gap-4.12.2/pkg/guava.
>
> Errors Encountered:
>
> 1.
>
> *Error when loading Guava in Sage*:
> 'fail'
> 2.
>
> *Error when trying to add the package directory in GAP*:
> Error, Variable: 'AddPackageDirectory' must have a value
> 3.
>
> *Error when attempting to set the GAP package directory*:
> [ ]
>
> Summary:
>
> - *Guava works when accessed through Sage’s GAP console using
> gap.console().*
> - *When I try to load Guava through Sage directly, it fails.*
>
> I would really appreciate your help, as I have been trying to resolve this
> issue for several hours without success. Thank you very much!
>
>
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>
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