On Wed, 15 Dec 2021, Michal Vlasák via ntg-context wrote:

> On Wed Dec 15, 2021 at 7:28 PM CET, Hans Hagen via ntg-context wrote:
> > On 12/15/2021 6:22 PM, Aditya Mahajan via ntg-context wrote:
> > > Hi all,
> > > 
> > > I am changing the way modules are installed in the ArchLinux aur package for luametatex.
> > > 
> > > https://aur.archlinux.org/packages/luametatex/
> > > 
> > > Earlier, I was just sym-linking to the modules installed by context-minimals-git package (which I also maintain). However, some packages there were out of date (in particular pgf/tikz). The new PKGBUILD installs the modules directly from CTAN.
> > > 
> > > The following modules are installed by default:
> > >      filter, vim, visualcounter, pgf, pgfplots, circtuitikz
> > > 
> > > You can install other modules by adding them in the PKGBUILD.
> > > 
> > > I am not sure if anyone else actually uses this PKGBUILD to maintain an up-to-date installation of LMTX. If someone does use it, and wishes to add more modules to the default list, I'll be happy to do that.
> > Just curious ... we have this
> >
> > >mtxrun --script ctan --packages --pattern=tikz
> >
> > which just gives info (at the time i made that the ctan api was bugged
> > as it mixed up xml and json keys, but i'm not sure if that was fixed of
> > became bug=feature for practical reasons)
> >
> > i never came to a 'download option' because it was ot clear where to
> > download from .. are there zips?
> 
> Not sure if it's for every package, but should be just
> 
>     "http://mirrors.ctan.org/" .. data.ctan.path .. ".zip"
> 
> in scripts.ctan.details.

This corresponds the "Download" link on the CTAN page of each package, but unfortunately, is not always in TDS format. For example, for pgf (which is locate at /graphics/pgf/base), we have

https://mirrors.ctan.org/graphics/pgf/base.zip

which lists all tex related files in base/tex sub-directory. The CTAN page (https://www.ctan.org/pkg/pgf) also has a field "TDS Archive", which lists:

http://mirrors.ctan.org/install/graphics/pgf/base/pgf.tds.zip

which is TDS compliant. The same is the case for circuitikz and pgfplots. So, it safer to use 

    "http://mirrors.ctan.org/" .. data.ctan.path .. "/" .. pkg_name .. "tds.zip"

But, for context packages, CTAN does nto have the tds zips (I guess because the default zip is already TDS compliant). For example:

    https://www.ctan.org/pkg/context-filter

has the "download" link at the bottom but not the "TDS Archive" link.

In the end, since I am only installing 4-5 packages, it is simpler to input the URLs but hand rather than write code to automate the logic. 

Aditya