In reply to @hmenke:matrix.org
I think that's a bit too much magic, especially considering our rather low throughput.

In reply to @hmenke:matrix.org
I think that's a bit too much magic, especially considering our rather low throughput.

My guess is that setting variable ctanupload to true in config.lua may help.

l3build maintainers suggested the same setting in https://github.com/latex3/l3build/issues/247. Thus I think this is the correct "how" part. It may take more time to find the "why" part (why it worked before, what has changed since then, etc.)

hmenke Would you mind applying

diff --git a/build.lua b/build.lua
index 7bf4f678..bff18b23 100644
--- a/build.lua
+++ b/build.lua
@@ -47,6 +47,7 @@ checkconfigs = { "build", "config-gd" }
 maxprintline = 9999
 
 -- For release
+ctanupload = false
 ctanzip = "pgf.ctan.flatdir"
 packtdszip = true
 

and try again? This will involve tag deletion and re-addition. I didn't have GPG keys set hence could not test in my fork.

I've been checking out the docs for the base layer, and I think there are some possibilities for improvement regarding the compatibility options:

1. The version option for setting the compatibility layer is only available for LaTeX. Presumably it should be available for plain and ConTeXt, too. Although I currently only use LaTeX, so I don't care about this much.
2. Not all possible version options are documented in the manual, latest isn't, and neither is 1.18
3. Looking at the source https://github.com/pgf-tikz/pgf/blob/master/tex/latex/pgf/basiclayer/pgf.sty#L18-L24, in particular line 22, it seems that there may be a typo, if the users specified 0.96, presumably they should be given 0.96 and not 1.18?
4. I believe one more option should be available, something like 3.1. It would currently of course be equivalent to latest, but would keep backwards compatibility with version 3.1 in the future.

In reply to @hmenke:matrix.org
These compatibility layers have been completely abandoned for PGF.

In reply to @hmenke:matrix.org
Also why do you think there should be a 3.1 compatibility option? Have any basic layer commands been removed in 3.1?

In reply to @hmenke:matrix.org
Also why do you think there should be a 3.1 compatibility option? Have any basic layer commands been removed in 3.1?

In reply to @nsajko:matrix.org
In the manual, the definition of \pgfcoordinate, and a few other places in the manual, reference the shape coordinate. However, shape coordinate doesn't seem to be documented.

OK I found the answer to this, the shape doesn't have it's own entry like other shapes, but there's this paragraph which explains that "coordinate" is confusingly a 2D vector/point:

The three shapes rectangle, circle, and coordinate are always defined and no library needs to be loaded for them. While the coordinate shape defines only the center anchor, the other two shapes define a standard set of anchors.

In reply to @nsajko:matrix.org
In principle I'm not opposed to reading the source to find out stuff like this, but in this case I don't know where to look.

Just in case you're still curious about this.
https://github.com/pgf-tikz/pgf/blob/3.1.10/tex/generic/pgf/modules/pgfmoduleshapes.code.tex#L412-L442

The doc for basic layer is incomplete. I think some basic layer commands are even not mentioned in the pgfmanual.