build/pkgs/sagemath_giac: new optional package

This optional sage/giac integration package replaces the old hard dependency on giac that was required to build sage.libs.giac.
orlitzky · Jan 24, 2025 · 59ecc1c · 59ecc1c
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diff --git a/build/pkgs/sagemath_giac/SPKG.rst b/build/pkgs/sagemath_giac/SPKG.rst
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+==============================================================================
+ Sage: Open Source Mathematics Software: Giac integration
+==============================================================================
+
+This pip-installable source distribution ``sagemath-giac`` is a small
+optional distribution for use with ``sagemath-standard``.
+
+It provides a Cython interface to the ``libgiac`` library for the
+purpose of symbolic integration and certain Groebner basis
+calculations.
diff --git a/build/pkgs/sagemath_giac/checksums.ini b/build/pkgs/sagemath_giac/checksums.ini
@@ -0,0 +1,4 @@
+tarball=sagemath-giac-VERSION.tar.gz
+sha1=a6fe71575d21791d003e7d94b887413d4e0dea42
+sha256=df7ff85a7ed595a805098fe4ff2103be52dcb7c91f5b11001f8979cfa6d68701
+upstream_url=https://github.com/orlitzky/sagemath-giac/archive/refs/tags/VERSION.tar.gz
diff --git a/build/pkgs/sagemath_giac/dependencies b/build/pkgs/sagemath_giac/dependencies
@@ -0,0 +1 @@
+cysignals cython giac gmpy2 sagelib | $(PYTHON_TOOLCHAIN) $(PYTHON)
diff --git a/build/pkgs/sagemath_giac/package-version.txt b/build/pkgs/sagemath_giac/package-version.txt
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+0.1.0
diff --git a/build/pkgs/sagemath_giac/spkg-configure.m4 b/build/pkgs/sagemath_giac/spkg-configure.m4
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+SAGE_SPKG_CONFIGURE([sagemath_giac], [
+  SAGE_PYTHON_PACKAGE_CHECK([sagemath_giac])
+])
diff --git a/build/pkgs/sagemath_giac/spkg-install.in b/build/pkgs/sagemath_giac/spkg-install.in
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+# Sorry if you wanted to specify your own $CYTHON here, but it won't
+# work.  We need to run cython using "python /path/to/cython" so that
+# the python from the sage venv gets used, which is what makes sure
+# that the cython search path includes the venv.
+export CYTHON=sage-cython
+
+cd src
+sdh_pip_install --no-build-isolation .
diff --git a/build/pkgs/sagemath_giac/type b/build/pkgs/sagemath_giac/type
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+optional
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		cysignals cython giac gmpy2 sagelib \| $(PYTHON_TOOLCHAIN) $(PYTHON)