* get/import/url: handle existing output directory
Currently if you run
```
dvc get https://github.com/iterative/example-get-started model.pkl --out .
```
it will nuke your cwd. To fix that we need to properly handle existing
directories, same as usual unix cli utilities do that.
* travis: specify python version when installing from chocolatey
Fixes#2609
Imagine the scenario of shared cache. To set it up, user would do:
```
dvc config cache.dir /path
dvc config cache.shared group
```
Now, when he runs any dvc operation that involves the Repo instance,
RemoteLOCAL will also be initialized and it will currently auto-create
the directory with a regular `os.mkdir`, which is not using group
permissions. To solve that, we can't simply use `self.makdirs` instead,
as it will cause same issues if you run any dvc command before
`dvc config cache.shared group`. So what we should do is create
directories on demand, instead of creating it in advance, same as we do
in other remotes.
The change itself is pretty trivial and involved removing that `mkdir`
line, adjusting tests to not rely on cache dir existence and also
adjusting `dvc version` to not rely on cache directory existance.
Fixes#2563
* ui/perf: do not clone same repo multiple times
Closes#2490
External repos are still created in /tmp. They might be reused until
main() end. If no perfect match is found then a repo with the same url
is copied (not cloned again) and adjusted to fit a request: rev and
cache_dir.
NOTE: test_download_error_pulling_imported_stage() was modified to not
rely on clone error.
* test: fix import update test
* test: fix external_repo test under Windows
* dvc: fix non-master default branch for external repos
* dvc: remove unused .unset_dir() method
* tree: make open method use mode and encoding
* api: try to open using self.tree if output not found
* repo: rename OutputMissingException
* test: api: test adding not cached output
* api: open: exists test instead of try
* repo: open: try opening from tree first
* repo: open: handle missing and not cached files
* repo: open: separate find out logic from opening
Config files like `~/.zshenv`, `~/.bashenv` etc, are loaded on each
shell invocation, which might overwrite the environment breaking the
commands we are trying to wrap. To fix that, we need to provide
appropriate flags to the shell we are using to avoid loading those
configs.
Fixes#2506
* utils: fix_env: dont delete LD_LIBRARY_PATH from env
* utils: add related issue to comment on why there is empty LD_LIBRARY_PATH
* Update dvc/utils/__init__.py
Co-Authored-By: Ruslan Kuprieiev <[email protected]>
* scm: git: move LD_LIBRARY_PATH fix to Git.clone method
Ruslan Kuprieiev
Kirill Malev
Ruslan Kuprieiev
Aman Sharma
Alexander Schepanovski
jahabdank
Irchan Bani
Paweł Redzyński
Vasilis Gerakaris
jimmy1134
Mr. Outis
Nikita Kodenko