With composer require drupal/eca_context it seems that somethings gets installed, but nothing can be found in the codebase afterwards. When calling composer show drupal/eca_context this is the output:
name : drupal/eca_context
descrip. : Extended context logic using an ECA context stack. Requires drupal/context_stack.
keywords :
versions : * 1.0.0-beta6
type : metapackage
license : GNU General Public License v2.0 or later (GPL-2.0-or-later) (OSI approved) https://spdx.org/licenses/GPL-2.0-or-later.html#licenseText
homepage : https://www.drupal.org/project/eca
source : []
dist : []
path : /drupal
names : drupal/eca_context
support
source : https://git.drupalcode.org/project/eca
requires
drupal/context_stack *
drupal/core ^9 || ^10
drupal/eca *
It seems that the package manager on d.o still knows about the old eca_context submodule and therefore doesn't provide metadata about the new module.
Even clearing composer cache doesn't resolve that issue.
This may require the help from the infrastructure team to resolve this.
Fixed
1.0
Miscellaneous
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It's likely this issue predates Contrib.social: some issue and comment data are missing.
I had some left overs from this module. It was listed as unsupported, but was nowhere to be found in the file system or comopser.json...
composer remove drupal/eca_context-eca_context (as mentined above) helped me get rid of that finally...