add a {randomseed} substitution string

[pytoxbot]

• Bitbucket: https://bitbucket.org/hpk42/tox/issue/125
• Originally reported by: @cjerdonek
• Originally created at: 2013-09-26T12:40:08.652

It would be nice to expose a special substitution string called something like {randomseed} that would generate a random integer value each time it is used. This would be useful for example in cases like this:

setenv =
    PYTHONHASHSEED = {randomseed}

An associated command-line option --randomseed to force it to a particular
value would also be good. See this e-mail thread for background.

Note that to be consistent with supporting --randomseed, {randomseed} should probably yield the same value every time it is used (e.g. if it appears more than once in tox.ini). In other words, it is a global value established once when tox is invoked.

[pytoxbot]

Original comment by @cjerdonek

That's great to hear. Thanks a lot, Holger!

[pytoxbot]

Original comment by @hpk42

Thanks, Chris. All merged now!

[pytoxbot]

Original comment by @cjerdonek

An updated patch for this issue is at pull request #79.

[pytoxbot]

Original comment by @cjerdonek

I created a new pull request #74 for this issue which changes the proposed API and behavior somewhat based on the discussion around pull request #73.

[pytoxbot]

Original comment by @cjerdonek

I created pull request #73 for this.

[pytoxbot]

Original comment by @cjerdonek

I implemented and documented the feature in this fork but still need to add tests.

[pytoxbot]

Original comment by @cjerdonek

I will prepare a patch for this.

[pytoxbot]

Original comment by @cjerdonek

Here is the documentation for PYTHONHASHSEED.