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I want to compute the finite parts of 1-loop integrals using FeynCalc. One of the most important package used for this is FeynHelpers (which in it uses Package-X).

But, since July 1, 2022, Package-X has to be terminated and I am not able to even download the previous versions. link

The FeynHelpers mention this in their user manual link: "Package-X is not being developed or even maintained anymore. However, the author of the tool, Hiren H. Patel, kindly gave us permission to ship OneLoop.m (part of Package-X containing library of analytic results for Passarino-Veltman functions) together with FeynHelpers. Therefore, no separate installation of Package-X is needed." But neither I am able to open the file OneLoop.m nor did I find any instruction on how to use it. When I try to use FeynHelpers anyways, (the function //PaxEvaluate[#,l]&) it gives the following errors,

Get::noopen: Cannot open /home/user/.Mathematica/Applications/X/PacletInfo.m.

If possible can someone direct me towards downloading older versions of Package-X?

Edit - Sorry! I got the package with its published article here

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    $\begingroup$ Did you check the internet archive in case they have an earlier snapshot? $\endgroup$
    – Hans Olo
    Commented Aug 23, 2022 at 18:24

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This one also might be interesting

https://gitlab.com/mule-tools/package-x

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I think this one will work:::: https://data.mendeley.com/datasets/yfkwrd4d5t/1

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