With this change, readTree gains the ability to notice a `.skip-tree`
marker in addition to the `.skip-subtree` marker.
The behaviour of the new marker will completely ignore the folder that
the marker is located in (i.e. no node will be present for it in the
parent at all).
To make this work, the recursive function in readTree had to be
modified to return a sentinel value (noting that a tree has requested
to be skipped) which is then filtered out when constructing the list
of children. The actual `readTree` function is now a wrapper around
this inner, sentinel-yielding implementation which unwraps the result
set.
For obvious reasons, `.skip-tree` is not allowed at the top-level and
readTree will throw an error if it encounters it there.
Fixes: b/244
Change-Id: Ica731bc1af356e881fd3d31c7109f62ffd2762ea
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8185
Autosubmit: tazjin <tazjin@tvl.su>
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
This makes it possible to override Nix builtins within a readTree
structure. Why would you want to do that, you might ask? Well ...
Change-Id: Icc9cb32e5db4a2eba370cf81769c642d237d4937
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3499
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
Instead of having a mix of depot-passed args (for the filter) and args
to the readTree function itself, make everything a single attribute
set of arguments passed to the function.
This also makes it a bit easier to extend this in the future.
Change-Id: I633c1fc96026d137b451bb604ef92be32571a0f5
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3498
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
Plumbs an additional internal argument through readTree that indicates
whether the top-level of a tree is being read, and avoids recursing
into itself in that case. This changes the externally visible
behaviour of readTree (it is now expected to be called a level higher
than previously).
This allows us to reduce the amount of boilerplate needed to bootstrap
the TVL repository (by not having to specify the individual folders
that need to be read).
For reasons related to an infinite recursion we could not (be bothered
to) debug, the top-level `config` key (which held the attribute set
passed on by readTree) has been removed. This is not needed, as it is
already passed on by readTree ...
Co-Authored-By: Florian Klink <flokli@flokli.de>
Change-Id: Id6e39b57b2f5b3473c4b695a72dd1d01fcfb7a66
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2961
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
Reviewed-by: grfn <grfn@gws.fyi>
