Conan-center-index: [package] zlib/1.2.11: Mirror mechanism is broken

[SpaceIm]

Package and Environment Details (include every applicable attribute)

• Package Name/Version: zlib/1.2.11
• Operating System+version: Windows 10
• Compiler+version: GCC 9
• Conan version: conan 1.22.2
• Python version: Python 3.7.6

Conan profile (output of conan profile show default or conan profile show <profile> if custom profile is in use)

[settings]
os=Windows
os_build=Windows
arch=x86_64
arch_build=x86_64
compiler=gcc
compiler.version=9
compiler.libcxx=libstdc++11
build_type=Release
[options]
[build_requires]
[env]

Steps to reproduce (Include if Applicable)

conan install zlib/1.2.11@ -b

Logs (Include/Attach if Applicable)

Click to expand log

ERROR: zlib/1.2.11: Error in source() method, line 35
        tools.get(**self.conan_data["sources"]["{}_mirror".format(self.version)])
        KeyError: '1.2.11_mirror'

Content of conandata.yml in source and export directories:

sources:
  1.2.11:
    sha256: c3e5e9fdd5004dcb542feda5ee4f0ff0744628baf8ed2dd5d66f8ca1197cb1a1
    url: https://zlib.net/zlib-1.2.11.tar.gz

1.2.11_mirror field is missing (deleted by conan install through a new feature?).

Workaround: use an array of urls under version field in conandata.yml, and replace try/except by a loop.

[madebr]

This is because the conan-center KB-H031 CONANDATA.YML REDUCE hook removes all other versions.

I believe this issue is similar to the one we are discussing about in https://github.com/conan-io/conan-center-index/pull/1060

[danimtb]

This is still under discussion and consideration of a new feature in the Conan client. Please follow the conversation here #6349

[Croydon]

Issue link is broken

https://github.com/conan-io/conan/issues/6349