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Bug 1459947 - python-cryptography and python2-cryptography should require python-setuptools as a dependency
Summary: python-cryptography and python2-cryptography should require python-setuptools...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: python-cryptography
Version: 7.3
Hardware: All
OS: Linux
unspecified
medium
Target Milestone: rc
: ---
Assignee: Christian Heimes
QA Contact: ipa-qe
URL:
Whiteboard:
: 1526064 1538609 (view as bug list)
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2017-06-08 16:04 UTC by jcastran
Modified: 2021-09-09 12:21 UTC (History)
8 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2018-04-10 11:36:43 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2018:0720 0 None None None 2018-04-10 11:37:05 UTC

Description jcastran 2017-06-08 16:04:53 UTC 
Description of problem:
Users are unable to import "fernet" which is provided by python-cryptography and python2-cryptography unless python-setuptools is installed. python-setuptools is not a dependency of this package and is not installed by default so importing fernet results in :

Traceback (most recent call last):
  File "./t.py", line 2, in <module>
    from cryptography.fernet import Fernet
  File "/usr/lib64/python2.7/site-packages/cryptography/fernet.py", line 16, in <module>
    from cryptography.hazmat.backends import default_backend
  File "/usr/lib64/python2.7/site-packages/cryptography/hazmat/backends/__init__.py", line 7, in <module>
    import pkg_resources
ImportError: No module named pkg_resources

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Version-Release number of selected component (if applicable):
   python-setuptools-0.9.8-3.el7.noarch
   python2-cryptography-1.3.1-3.el7.x86_64

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
How reproducible:
   Everytime

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Steps to Reproduce:
1. confirm python-setuptools is NOT installed
2. # yum install python-cryptography
3. # python
   >> from cryptography import fernet

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Actual results:

Traceback (most recent call last):
  File "./t.py", line 2, in <module>
    from cryptography.fernet import Fernet
  File "/usr/lib64/python2.7/site-packages/cryptography/fernet.py", line 16, in <module>
    from cryptography.hazmat.backends import default_backend
  File "/usr/lib64/python2.7/site-packages/cryptography/hazmat/backends/__init__.py", line 7, in <module>
    import pkg_resources
ImportError: No module named pkg_resources

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Expected results:

python-cryptography and python2-cryptography pull in python-setuptools as a dependency.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Additional info:

# python
   Python 2.7.5 (default, Feb 11 2014, 07:46:25) 
   [GCC 4.8.2 20140120 (Red Hat 4.8.2-13)] on linux2
   Type "help", "copyright", "credits" or "license" for more information.
   >>> import os.path
   >>> print os.path.abspath(pkg_resources.__file__)
   /usr/lib/python2.7/site-packages/pkg_resources.pyc

# rpm -qf /usr/lib/python2.7/site-packages/pkg_resources.pyc
       python-setuptools-0.9.8-4.el7.noarch
Comment 2 Kyle Walker 2017-06-08 16:26:06 UTC 
The failure is due to the following import operation:

    /usr/lib64/python2.7/site-packages/cryptography/hazmat/backends/__init__.py
    <snip>
    import pkg_resources
    <snip>


The specfile looks to just need:

diff --git a/python-cryptography.spec b/python-cryptography.spec
index b9c3bd6..eae04c3 100644
--- a/python-cryptography.spec
+++ b/python-cryptography.spec
@@ -82,6 +82,7 @@ Requires:       python-six >= 1.4.1
 Requires:       python-cffi >= 1.4.1
 Requires:       python-enum34
 Requires:       python-ipaddress
+Requires:       python-setuptools
 
 %description -n python2-cryptography
 cryptography is a package designed to expose cryptographic primitives and
@@ -98,6 +99,7 @@ Requires:       python3-idna >= 2.0
 Requires:       python3-pyasn1 >= 0.1.8
 Requires:       python3-six >= 1.4.1
 Requires:       python3-cffi >= 1.4.1
+Requires:       python3-setuptools
 
 %description -n python3-cryptography
 cryptography is a package designed to expose cryptographic primitives and


- Kyle Walker
Comment 8 Mohammad Rizwan 2018-01-19 07:52:35 UTC 
Steps:
1. confirm python-setuptools is NOT installed
2. # yum install python-cryptography
3. # python
   >> from cryptography import fernet

Actual result:

[root@master ~]# rpm -qa python-setuptools
[root@master ~]# yum install python-cryptography
Loaded plugins: product-id, search-disabled-repos, subscription-manager
This system is not registered with an entitlement server. You can use subscription-manager to register.
Resolving Dependencies
--> Running transaction check
---> Package python2-cryptography.x86_64 0:1.7.2-2.el7 will be installed
--> Processing Dependency: python-setuptools for package: python2-cryptography-1.7.2-2.el7.x86_64
--> Running transaction check
---> Package python-setuptools.noarch 0:0.9.8-7.el7 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

=============================================================================================================================================================================
 Package                                          Arch                               Version                                 Repository                                 Size
=============================================================================================================================================================================
Installing:
 python2-cryptography                             x86_64                             1.7.2-2.el7                             beaker-Server                             503 k
Installing for dependencies:
 python-setuptools                                noarch                             0.9.8-7.el7                             beaker-Server                             397 k

Transaction Summary
=============================================================================================================================================================================
Install  1 Package (+1 Dependent package)

Total download size: 899 k
Installed size: 4.6 M
Is this ok [y/d/N]: y
Downloading packages:
(1/2): python-setuptools-0.9.8-7.el7.noarch.rpm                                                                                                       | 397 kB  00:00:00     
(2/2): python2-cryptography-1.7.2-2.el7.x86_64.rpm                                                                                                    | 503 kB  00:00:00     
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Total                                                                                                                                        5.7 MB/s | 899 kB  00:00:00     
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
  Installing : python-setuptools-0.9.8-7.el7.noarch                                                                                                                      1/2 
  Installing : python2-cryptography-1.7.2-2.el7.x86_64                                                                                                                   2/2 
  Verifying  : python-setuptools-0.9.8-7.el7.noarch                                                                                                                      1/2 
  Verifying  : python2-cryptography-1.7.2-2.el7.x86_64                                                                                                                   2/2 

Installed:
  python2-cryptography.x86_64 0:1.7.2-2.el7                                                                                                                                  

Dependency Installed:
  python-setuptools.noarch 0:0.9.8-7.el7                                                                                                                                     

Complete!
[root@master ~]# python
Python 2.7.5 (default, Dec  8 2017, 16:39:59) 
[GCC 4.8.5 20150623 (Red Hat 4.8.5-25)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from cryptography import fernet
>>> exit(0)
[root@master ~]# 


Based on above observations, marking bug as verified.
Comment 11 errata-xmlrpc 2018-04-10 11:36:43 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2018:0720
Comment 12 Christian Heimes 2019-02-26 16:46:16 UTC 
*** Bug 1538609 has been marked as a duplicate of this bug. ***
Comment 13 Christian Heimes 2019-02-26 16:47:16 UTC 
*** Bug 1526064 has been marked as a duplicate of this bug. ***
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