A few more notes:

1. Missing texlua - found
The missing `texlua` from `bin/` and `tex/texmf-linuxmusl-64/bin` appears to be a problem originating at the rsync source, notably it appears that `texlua` is missing from these paths:

http://standalone.contextgarden.net/setup/linuxmusl-64/
http://standalone.contextgarden.net/current/bin/luatex/linuxmusl-64/bin/

The `texluac` also appears to be missing from these paths (but I have not experienced errors that appear relating to its absence).

2. mtxrun not finding paths
Running `context` results in an error because it cannot find `mtx-context.lua`.

I can confirm that mtx-context.lua is in an expected path with:

$ /context # find . -name mtx-context.lua
./tex/texmf-context/scripts/context/lua/mtx-context.lua

I noted mtxrun checks and sets the `platform` (`os.platform`) variable, and will use `linux-64` by default.  When musl is being used this ought to be `linuxmusl-64`.  Two potential solutions are:

 a. have mtxrun detect musl with a call to `ldd --version` when setting `platform`; or
 b. symlink texmf-linux-64 -> texmf-linuxmusl-64

I tried both but `context` still cannot find `mtx-context.lua`.

The path resolution is complex and challenging to debug, and I expect the issue may be immediately apparent to some.

I've attached a log of a call to `context` with a number of the traces turned on, that hopefully sheds some light on the problem.

I'm happy to delve or investigate further as may be helpful, and any assistance is appreciated.

Cheers,
Brian

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