src/sage/features/giac.py: add new feature for the giac program #38672
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In preparation for adding a --disable-giac option, we add a new feature that detects the presence of the "giac" executable. We already have a feature for sage.libs.giac, but that only guards the libgiac interface; we still have code that runs "giac" behind pexpect. This will allow us to skip those tests when giac is not installed.
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…giac program
In preparation for adding a `--disable-giac` option, we add a new
feature that detects the presence of the "giac" executable. We already
have a feature for `sage.libs.giac`, but that only guards the libgiac
interface; we still have code that runs "giac" behind pexpect. This will
allow us to skip those tests when giac is not installed.
URL: sagemath#38672
Reported by: Michael Orlitzky
Reviewer(s): Dima Pasechnik
vbraun
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<!-- ^ Please provide a concise and informative title. --> <!-- ^ Don't put issue numbers in the title, do this in the PR description below. --> <!-- ^ For example, instead of "Fixes sagemath#12345" use "Introduce new method to calculate 1 + 2". --> <!-- v Describe your changes below in detail. --> <!-- v Why is this change required? What problem does it solve? --> <!-- v If this PR resolves an open issue, please link to it here. For example, "Fixes sagemath#12345". --> The tag `# needs sage.libs.giac` has already appeared in a few places, but the feature was not defined. - This complements sagemath#38672 @orlitzky - Cherry-picked from from sagemath#35095 ### 📝 Checklist <!-- Put an `x` in all the boxes that apply. --> - [x] The title is concise and informative. - [x] The description explains in detail what this PR is about. - [x] I have linked a relevant issue or discussion. - [ ] I have created tests covering the changes. - [ ] I have updated the documentation and checked the documentation preview. ### ⌛ Dependencies <!-- List all open PRs that this PR logically depends on. For example, --> <!-- - sagemath#12345: short description why this is a dependency --> <!-- - sagemath#34567: ... --> URL: sagemath#38715 Reported by: Matthias Köppe Reviewer(s): Kwankyu Lee
vbraun
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<!-- ^ Please provide a concise and informative title. --> <!-- ^ Don't put issue numbers in the title, do this in the PR description below. --> <!-- ^ For example, instead of "Fixes sagemath#12345" use "Introduce new method to calculate 1 + 2". --> <!-- v Describe your changes below in detail. --> <!-- v Why is this change required? What problem does it solve? --> <!-- v If this PR resolves an open issue, please link to it here. For example, "Fixes sagemath#12345". --> The tag `# needs sage.libs.giac` has already appeared in a few places, but the feature was not defined. - This complements sagemath#38672 @orlitzky - Cherry-picked from from sagemath#35095 ### 📝 Checklist <!-- Put an `x` in all the boxes that apply. --> - [x] The title is concise and informative. - [x] The description explains in detail what this PR is about. - [x] I have linked a relevant issue or discussion. - [ ] I have created tests covering the changes. - [ ] I have updated the documentation and checked the documentation preview. ### ⌛ Dependencies <!-- List all open PRs that this PR logically depends on. For example, --> <!-- - sagemath#12345: short description why this is a dependency --> <!-- - sagemath#34567: ... --> URL: sagemath#38715 Reported by: Matthias Köppe Reviewer(s): Kwankyu Lee
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In preparation for adding a
--disable-giacoption, we add a new feature that detects the presence of the "giac" executable. We already have a feature forsage.libs.giac, but that only guards the libgiac interface; we still have code that runs "giac" behind pexpect. This will allow us to skip those tests when giac is not installed.