add initial pixi support

Author: ahoarau

pixi.toml

@@ -0,0 +1,67 @@
+[workspace]
+name = "proxsuite"
+version = "0.7.2"
+description = "The Advanced Proximal Optimization Toolbox"
+channels = ["conda-forge"]
+platforms = ["linux-64", "osx-64", "osx-arm64", "win-64"]
+
+[build-dependencies]
+ccache = ">=4.9.1"
+cmake = ">=3.22"
+cxx-compiler = ">=1.7.0"
+ninja = ">=1.11"
+
+[dependencies]
+eigen = ">=3.4.0,<4"
+simde = ">=0.8.2,<0.9"
+catch2 = ">=3.8.0,<4" # Only for test
+cereal = ">=1.3.2,<2" # only for test
+numpy = ">=1.22" # Only for python bindings
+python = ">=3.9" # Only for python bindings
+nanobind = ">=2.9.2,<3" # Only for python bindings
+libmatio = ">=1.5.28,<2" # Only for maros meszaros tests
+doxygen = ">=1.13.2,<2" # Only for doc
+graphviz = ">=13.1.2,<14" # Only for doc
+
+[tasks.configure]
+cmd = [
+  "cmake",
+  "-S", ".",
+  "-B", "build/RelWithDebInfo",
+  "-G", "Ninja",
+  "-DCMAKE_INSTALL_PREFIX=$CONDA_PREFIX",
+  "-DCMAKE_BUILD_TYPE=RelWithDebInfo",
+  "-DBUILD_WITH_VECTORIZATION_SUPPORT=ON",
+  "-DBUILD_TESTING=ON",
+  "-DBUILD_DOCUMENTATION=OFF",
+  "-DBUILD_EXAMPLES=ON",
+  "-DBUILD_BENCHMARK=ON",
+  "-DBUILD_PYTHON_INTERFACE=ON",
+  "-DBUILD_WITH_OPENMP_SUPPORT=ON"
+]
+
+[tasks.reconfigure]
+depends-on = ["clear", "configure"]
+
+[tasks.build]
+depends-on = ["configure"]
+cmd = ["cmake", "--build", "build/RelWithDebInfo"]
+
+[tasks.test]
+depends-on = ["build"]
+cmd = ["ctest", "--test-dir", "build/RelWithDebInfo", "--output-on-failure"]
+
+[tasks.install]
+depends-on = ["build"]
+cmd = ["cmake", "--install", "build/RelWithDebInfo"]
+
+[tasks.doc]
+depends-on = ["configure"]
+cmd = ["cmake", "--build", "build/RelWithDebInfo", "--target", "doc"]
+
+[tasks.clear]
+cmd = ["cmake", "-E", "remove_directory", "build/RelWithDebInfo"]
+
+[tasks.clean]
+depends-on = ["configure"]
+cmd = ["cmake", "--build", "build/RelWithDebInfo", "--target", "clean"]