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snakebasket introduction (budapest.py)
Ryan Laneon 26 April 2013
Transcript of snakebasket introduction (budapest.py)
for every node 2) hope exactly one version
of each dependency is specified with snakebasket 1) run `sb install`
just once 3) manually patch or update dependencies
to get them to play with each other 2. snakebasket downloads all
then adds each item in their requirements.txt or setup.py
to a single, massive, requirements_set 3. As snakebasket adds each item to the requirement_set,
it keeps only the
best available version seen so far 2) make a coffee 4. snakebasket finally does a `pip install (dependency)` for each dependency in the pruned requirements_set Wait a second. What does "best available version" mean? default behavior --prefer-pinned-revision interprets a missing version as the HEAD of that dependency (and thus the latest version)
always takes the latest available version (whether HEAD or an explicit version) always takes the latest explicitly pinned version over a missing version No more `pip update` 2. Add a requirements.txt 3. `sb install -r requirements.txt` 4. Sleep well at night 1. Activate your project's virtualenv
2. `curl -ss -L http://href.prezi.com/snakebasket | bash -s`
(see https://github.com/prezi/snakebasket README) Simply list your requirements and versions: # requirements.txt
-e git+http://firstname.lastname@example.org#egg=pip-test-package 2. If a dependency requires a C compiler and one is not available, the recursive installation halts. How can you help? 1. Flesh out test stubs 2. Bump to the latest pip Use it! (If you think it will help you)
Send bugs to email@example.com
Submit pull requests Questions? Thank you! Conflict Resolution ... but one big assumption of backwards compatibility.