openstack
/
requirements
Code Issues Proposed changes

Remove documentation about USE_CONSTRAINTS 

The USE_CONSTRAINTS configuration variable was removed from DevStack
more than two years ago, however the requirements README was still
referencing it.

This patch also fixes the capitalization of DevStack throughout the
file.

Change-Id: I0ee4db73b0b6859c0f8a2c6b4a22befb98bcd928
This commit is contained in:
Pierre Riteau 2017-11-28 15:13:01 +00:00
parent bd903ccddd
commit f2481af1e6
1 changed files with 7 additions and 18 deletions
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25
README.rst
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@ -28,7 +28,7 @@ requirements update.
An example of how bad this had gotten is that python-keystoneclient
would typically be installed / uninstalled 6 times during the course
of a devstack gate run during Havana. If the last version of python
of a DevStack gate run during Havana. If the last version of python
keystoneclient happened to be incompatible with some piece of
OpenStack a very hard to diagnose break occurs.
@ -85,23 +85,12 @@ an exact list of versions.
Enforcement for Test Runs
-------------------------
Devstack
DevStack
++++++++
When ``USE_CONSTRAINTS`` is set ``True``, devstack uses the pip ``-c`` option
to pin all the libraries to known good versions. ``edit-constraints`` can be
used to unpin a single constraint, and this is done to install libraries from
git. This is the **recommended** way to use devstack.
When ``USE_CONSTRAINTS`` is set ``False``, devstack overwrites the
``requirements.txt`` and ``test-requirements.txt`` for **all** installed
projects with the versions from ``global-requirements.txt``. Projects that are
not in ``projects.txt`` get 'soft' updates, ones that are get 'hard' updated.
This attempts to ensure that we will get a deterministic set of requirements
installed in the test system, and it won't be a guessing game based on the
last piece of software to be installed. However due to the interactions with
transitive dependencies this doesn't actually deliver what we need, and is
**not recommended**.
DevStack uses the pip ``-c`` option to pin all the libraries to known good
versions. ``edit-constraints`` can be used to unpin a single constraint, and
this is done to install libraries from git.
Tox
+++
@ -171,7 +160,7 @@ edit-constraints
----------------
Replace all references to a package in a constraints file with a new
specification. Used by devstack to enable git installations of libraries that
specification. Used by DevStack to enable git installations of libraries that
are normally constrained::
edit-constraints oslo.db "-e file://opt/stack/oslo.db#egg=oslo.db"
@ -237,7 +226,7 @@ General Review Criteria
Bare library names are bad. If it's unknown what a working minimum
is, look at the output of pip freeze at the end of a successful
devstack/tempest run and use that version. At least that's known to
DevStack/tempest run and use that version. At least that's known to
be working now.
- Commit message should refer to consuming projects(s)