[MacPorts] #60847: port install subport=xyz doesnt work as expected

[MacPorts]

#60847: port install subport=xyz doesnt work as expected
-----------------------+----------------------------
 Reporter:  wadjei     |      Owner:  (none)
     Type:  defect     |     Status:  new
 Priority:  Normal     |  Milestone:  MacPorts 2.6.3
Component:  ports      |    Version:  2.6.2
 Keywords:  mavericks  |       Port:
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 I'm working on a system which has the last version of MacOS 10.9 Mavericks
 installed.

 I am trying to follow the instructions here
 https://trac.macports.org/wiki/howto/InstallingOlderPort#subport to
 install an older version of mysql8-server (@8.0.19_0) since the current
 version will not compile on my system.

 This is a subport of databases/mysql8 - I have cloned and checked out an
 older version of the repository and was able to install mysql8
 successfully
 {{{
 $ port installed mysql8
 The following ports are currently installed:
   mysql8 @8.0.19_0 (active)
 }}}

 But any attempt to install the same version of mysql8-server results in
 the current version (8.0.21) being fetched as a dependency which then
 fails to install.

 In the databases/mysql8 directory I'm executing, and seeing
 {{{
 /Users/will/macports-ports/databases/mysql8
 helium:mysql8 will$ port info
 mysql8 @8.0.19 (databases)
 Sub-ports:            mysql8-server
 Variants:             debug, universal

 Description:          MySQL is an open-source, multi-threaded SQL
 database.
 Homepage:             https://www.mysql.com/

 Build Dependencies:   cmake, clang-7.0
 Library Dependencies: openssl, cyrus-sasl2, icu, zlib, zstd, legacy-
 support
 Runtime Dependencies: mysql_select
 Platforms:            darwin
 License:              GPL-2
 Maintainers:          Email: herby.gillot at gmail.com, GitHub: herbygillot
                       Policy: openmaintainer
 helium:mysql8 will$ sudo port install subport=mysql8-server
 --->  Computing dependencies for mysql8
 --->  Fetching archive for mysql8
 --->  Attempting to fetch mysql8-8.0.21_0.darwin_13.x86_64.tbz2 from
 http://lil.fr.packages.macports.org/mysql8
 --->  Attempting to fetch mysql8-8.0.21_0.darwin_13.x86_64.tbz2 from
 https://packages.macports.org/mysql8
 --->  Attempting to fetch mysql8-8.0.21_0.darwin_13.x86_64.tbz2 from
 http://mse.uk.packages.macports.org/sites/packages.macports.org/mysql8
 --->  Fetching distfiles for mysql8
 --->  Verifying checksums for mysql8
 --->  Extracting mysql8
 }}}

 which then goes on to fail

-- 
Ticket URL: <https://trac.macports.org/ticket/60847>
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