* use yaml 1.2 everywhere
This commit:
* gets rid of pyyaml
* uses ruamel everywhere
* tries to unite toml and yaml
However, this will require a few more changes that will come soonish.
Eg: Current `parse_yaml` and `parse_toml` behavior could be error-prone,
so, it's better to introduce `tree` inside these serialization methods
(which I will try to tackle next).
Another is, yaml load can be slow for json. We could speed it up just by
using `json.load(s)` here (also in upcoming patch).
* Fix tests
* dvc: use lockfile as yaml instead of json
* refactor Dvcfile into Pipeline file and Single stage file
* fix tests
* dvc: fix outputs
* add more tests for collection of outputs
* add tests for data cloud/get/import/ls
* tests: test for checkouts
* Allow other checksums other than md5
* tests: use iterdir instead of os.listdir
* cleanup errors reported by cc and ds
* utils: throw DvcException instead of plain Exception
* tests: use yaml.load instead of json.load
* run: split assignments
* Update dvc/stage/exceptions.py
Co-authored-by: Ruslan Kuprieiev <[email protected]>
Now, pipeline stage files can house multiple stages, and separate lockfiles
are created which has the checksums, whereas Dvcfile will be clean and human
readable and editable. The *.dvc files will be generated for output files.
It is available via a hidden flag: -n.
Fixes#1871
PR: #3584
skshetry
Saugat Pachhai
Casper da Costa-Luis
