Remove folder argument from platform `create`

[stavros11]

Following the discussion in https://github.com/qiboteam/qibolab_platforms_qrc/pull/108#discussion_r1467390932.

I believe some lines in qibo (and maybe also qibocal) need to be updated.

Checklist:

• [ ] Reviewers confirm new code works as expected.
• [ ] Tests are passing.
• [ ] Coverage does not decrease.
• [ ] Documentation is updated.

[stavros11]

Thanks, the only issue is that doctest requires qibo to be updated, because qibo.set_backend is currently using the removed path argument.

[andrea-pasquale]

Thanks, the only issue is that doctest requires qibo to be updated, because qibo.set_backend is currently using the removed path argument.

Ahhh, too many repositories.

[andrea-pasquale]

Btw, shall we release qibolab now that the milestone is complete? @scarrazza @stavros11 @alecandido I know that maybe some changes were not tested on hardware but I will be able to merge some PRs in qibocal as soon as we release qibolab.

[alecandido]

Btw, shall we release qibolab now that the milestone is complete? @scarrazza @stavros11 @alecandido I know that maybe some changes were not tested on hardware but I will be able to merge some PRs in qibocal as soon as we release qibolab.

Fine by me :)

[scarrazza]

@andrea-pasquale fine by me too.

[stavros11]

@andrea-pasquale @alecandido I updated qibo to 0.2.6. As soon as CI passes, I will merge this.

[alecandido]

@andrea-pasquale @alecandido I updated qibo to 0.2.6. As soon as CI passes, I will merge this.

 = 46 failed, 2198 passed, 104 skipped, 47 deselected, 3 xfailed, 3 xpassed, 5 warnings in 18.20s =

bad luck...

[stavros11]

@alecandido in 2603611562e45f05a59e9cd08f9e541e0c325266 I dropped the default transpiler from QibolabBackend. This is a significant change because it will no longer be possible to run circuits that contain non-native gates out-of-the box, including through the openqasm, C and Rust APIs (btw I also pushed a fix for these tests but for some reason github doesn't show it).

The reason for dropping is that otherwise we are testing the transpiler in qibolab tests while the code is in qibo (which leads to the failures above). It is still possible to add a transpiler of choice manually:

backend = QibolabBackend("my_platform")
backend.transpiler = ... # my transpiler imported from qibo

or even better the user transpiles their circuit manually:

backend = QibolabBackend("my_platform")

circuit = Circuit(...)
...

native_circuit = my_transpiler(circuit)

result = backend.execute_circuit(native_circuit)

[stavros11]

After https://github.com/qiboteam/qibolab/actions/runs/8360122834/job/22885054536?pr=784 I think I should officially give up

Cannot install setuptools.

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 90.90909% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 66.57%. Comparing base (535dcdb) to head (21369b5).

Files	Patch %	Lines
src/qibolab/backends.py	85.71%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #784 +/- ## ======================================= Coverage 66.56% 66.57% ======================================= Files 50 50 Lines 6063 6061 -2 ======================================= - Hits 4036 4035 -1 + Misses 2027 2026 -1 ``` | [Flag](https://app.codecov.io/gh/qiboteam/qibolab/pull/784/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=qiboteam) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/qiboteam/qibolab/pull/784/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=qiboteam) | `66.57% <90.90%> (+<0.01%)` | :arrow_up: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=qiboteam#carryforward-flags-in-the-pull-request-comment) to find out more.

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[alecandido]

Yes, please, just merge.

All in all, Qibolab is the low-level layer, it is fine to require circuits to be transpiled by someone else (i.e. Qibo).