Fix the suggested pip incantation for cryptography (#9699)

If you have the wrong version of `cryptography` installed, synapse suggests:

```
To install run:
    pip install --upgrade --force 'cryptography>=3.4.7;python_version>='3.6''
```

However, the use of ' inside '...' doesn't work, so when you run this, you get
an error.
This commit is contained in:
Richard van der Hoff 2021-03-29 11:55:33 +01:00 committed by GitHub
parent 0a778c135f
commit ad8690a26c
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2 changed files with 16 additions and 2 deletions

1
changelog.d/9699.bugfix Normal file
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@ -0,0 +1 @@
Fix a bug introduced in Synapse 1.30.1 which meant the suggested `pip` incantation to install an updated `cryptography` was incorrect.

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@ -15,6 +15,7 @@
# See the License for the specific language governing permissions and
# limitations under the License.
import itertools
import logging
from typing import List, Set
@ -101,7 +102,7 @@ CONDITIONAL_REQUIREMENTS = {
"txacme>=0.9.2",
# txacme depends on eliot. Eliot 1.8.0 is incompatible with
# python 3.5.2, as per https://github.com/itamarst/eliot/issues/418
'eliot<1.8.0;python_version<"3.5.3"',
"eliot<1.8.0;python_version<'3.5.3'",
],
"saml2": [
# pysaml2 6.4.0 is incompatible with Python 3.5 (see https://github.com/IdentityPython/pysaml2/issues/749)
@ -131,6 +132,18 @@ for name, optional_deps in CONDITIONAL_REQUIREMENTS.items():
ALL_OPTIONAL_REQUIREMENTS = set(optional_deps) | ALL_OPTIONAL_REQUIREMENTS
# ensure there are no double-quote characters in any of the deps (otherwise the
# 'pip install' incantation in DependencyException will break)
for dep in itertools.chain(
REQUIREMENTS,
*CONDITIONAL_REQUIREMENTS.values(),
):
if '"' in dep:
raise Exception(
"Dependency `%s` contains double-quote; use single-quotes instead" % (dep,)
)
def list_requirements():
return list(set(REQUIREMENTS) | ALL_OPTIONAL_REQUIREMENTS)
@ -150,7 +163,7 @@ class DependencyException(Exception):
@property
def dependencies(self):
for i in self.args[0]:
yield "'" + i + "'"
yield '"' + i + '"'
def check_requirements(for_feature=None):