Aditya: I did indeed; it fails with `mtxrun | unknown script 'base.lua' or 'mtx-base.lua'` (sorry I didn't report this).

Hans:

> if musl needs different bin then there should be a different initial
> download i think because basically we're now talking of: windows, osx,
> linux, linuxmusl (a different species)

This appears to be the case currently, as first-setup.sh calls rsync to copy files from:

http://standalone.contextgarden.net/setup/linuxmusl-64/bin/ for linux (musl)

http://standalone.contextgarden.net/setup/linux-64/bin/ for linux (glibc)

texlua just seems to be missing from the linuxmusl-64 path; it's in the linux-64 path. I suspect it's a build issue.

> isn't there some magic env var that tels if musl is used? do programs

> and scripts really have to jumpo through such loops

It seems there is no better way to do detection. This post seems to summarize what I'd read elsewhere: https://unix.stackexchange.com/questions/120380

Could one symlink `texmf-linux-64` to point to `texmf-linuxmusl-64` via first-setup.sh? Then mtxrun wouldn't have to do any detection.

> hm, so musl is far from a drop=in for glib or do i get it wrong

There certainly do seem to be a lot of hoops.

That said, notwithstanding the weird path issues, of the six TODO items I mentioned, 1 & 2, and 4 require musl detection, 3 is related to the rsync setup, 5 is a shell problem (not musl per-se).

I've no idea what's going on with the paths / problem 6 though. It could be musl/luatex or maybe Alpine. My most recent insight was that the `instance.files` are essentially empty with Alpine/musl (and so is the cache), so they're not being read for some reason. I've not yet isolated where that reading happens.

Brian

On Wed, 11 Apr 2018 at 16:37 Hans Hagen <j.hagen@xs4all.nl> wrote:

On 4/11/2018 10:08 PM, Brian Hunt wrote:
> So here's what I've got for a TODO so far to get ConTeXt working on
> Alpine Linux with musl (subject to item #6, mtx-context.lua not being
> found):
>
> 1. Add the musl test to first-setup.sh
> 2. Add the same musl test to tex/setuptex

no problem adding a robust test there

> 3. Add texlua (and texluac?) to
> a. the setup rsync bin/ directories
> b. the tex/texmf-linuxmusl(|-ppc|-64)

we don't use texluac, don't need texlua on windows and on linux texlua
is just a symlink

if musl needs different bin then there should be a different initial
download i think because basically we're now talking of: windows, osx,
linux, linuxmusl (a different species)

> 4. Update mtxrun
>
> Here's code that ought to work for detecting musl in mtxrun. Around
> line 3721 of the mtxrun add:
>
> if find(architecture,"x86_64",1,true) then
> platform="linux-64"
> elseif find(architecture,"ppc",1,true) then
> platform="linux-ppc"
> else
> platform="linux"
> end
> + if resultof("ldd --version 2>&1"):find("musl") ~= nil then
> + platform = platform:gsub("linux", "linuxmusl")
> + end

that's not going to happen, some system call 9each run) in order to
determine what linux species we run ... (there are a few calls but these
are never used becasue we use HOSTTYPE (if needed we can set one
ourselves on these platforms)

isn't there some magic env var that tels if musl is used? do programs
and scripts really have to jumpo through such loops

> 5. Note that in tex/setuptex, there's evidently no way to get the
> current script so one has to explicitly provide the TeX directory
> (appears to be a BusyBox bug).
> 6. `context` is unable to locate `mtx-context.lua`. Some tracker output
> sheds some light:
> i. context --trackers=resolvers.expansions is identical
> ii. context --trackers=resolvers.details,resolvers.details differs,
> with the output attached. Note that to keep the comparison short I
> removed lines that differed only because `linux` had been changed to
> `linuxmusl`.
>
> Will keep plugging away to see if I can determine why `mtx-context.lua`
> cannot be found on Alpine Linux.
hm, so musl is far from a drop=in for glib or do i get it wrong

Hans

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