Install sxs package

.github/workflows/Tests.yaml

@@ -879,7 +879,7 @@ ${{ matrix.build_type }}-pch-${{ matrix.use_pch || 'ON' }}"
       # We install some low-level dependencies with Homebrew. They get picked up
       # by `spack external find`.
       SPECTRE_BREW_DEPS: >-  # Line breaks are spaces, no trailing newline
-        autoconf automake catch2 ccache cmake pkg-config boost
+        autoconf automake catch2 ccache cmake fftw pkg-config boost
       # We install these packages with Spack and cache them. The full specs are
       # listed in support/DevEnvironments/spack.yaml. This list is only needed
       # to create the cache.

containers/Dockerfile.buildenv

@@ -173,6 +173,7 @@ RUN apt-get update -y \
         libboost-thread-dev libboost-tools-dev libssl-dev \
         libhdf5-dev hdf5-tools \
         libarpack2-dev \
+        libfftw3-dev \
         libbenchmark-dev \
     && if [ ${UBUNTU_VERSION} = 18.04 ]; then \
     wget https://github.com/jbeder/yaml-cpp/archive/refs/tags/0.8.0.tar.gz \
@@ -196,17 +197,10 @@ RUN apt-get update -y \
     apt-get install -y libjemalloc2 libjemalloc-dev libyaml-cpp-dev; \
     fi
 
-# Install Python packages
-# We only install packages that are needed by the build system (e.g. to compile
-# Python bindings or build documentation) or used by Python code that is
-# unit-tested. Any other packages can be installed on-demand.
+# Install Python
 # - We use python-is-python3 because on Ubuntu 20.04 /usr/bin/python was removed
 #   to aid in tracking down anything that depends on python 2. However, many
 #   scripts use `/usr/bin/env python` to find python so restore it.
-# - We install h5py explicitly from binary so that cross compilation is quicker.
-COPY support/Python/requirements.txt requirements.txt
-COPY support/Python/dev_requirements.txt dev_requirements.txt
-ENV DEBIAN_FRONTEND noninteractive
 RUN apt-get update -y \
     && if [ ${UBUNTU_VERSION} = 18.04 ]; then \
     apt-get install -y zlib1g-dev libncurses5-dev libgdbm-dev libnss3-dev \
@@ -215,17 +209,27 @@ RUN apt-get update -y \
     && wget https://www.python.org/ftp/python/3.10.1/Python-3.10.1.tgz \
     && tar -xf Python-3.10.1.tgz && cd ./Python-3.10.1 \
     && ./configure --enable-optimizations && make ${PARALLEL_MAKE_ARG} \
-    && make altinstall && cd ../ \
+    && make install && cd ../ \
     && rm -rf ./Python-3.10.1.tgz ./Python-3.10.1 \
-    && python3.10 -m pip install --upgrade pip \
-    && pip3.10 --no-cache-dir install --only-binary=h5py -r requirements.txt \
-    -r dev_requirements.txt; \
     else \
     apt-get install -y python3-pip python-is-python3 pkg-config \
-    && pip3 --no-cache-dir install --only-binary=h5py -r requirements.txt \
-    -r dev_requirements.txt; \
-    fi \
+    fi
+
+# Install Python packages
+# We only install packages that are needed by the build system (e.g. to compile
+# Python bindings or build documentation) or used by Python code that is
+# unit-tested. Any other packages can be installed on-demand.
+# - We install h5py explicitly from binary so that cross compilation is quicker.
+COPY support/Python/requirements.txt requirements.txt
+COPY support/Python/dev_requirements.txt dev_requirements.txt
+ENV DEBIAN_FRONTEND noninteractive
+RUN python3 -m pip install --upgrade pip \
+    && pip3 --no-cache-dir install --only-binary=h5py \
+      -r requirements.txt -r dev_requirements.txt; \
     && rm requirements.txt dev_requirements.txt
+# Call the SXS package so it downloads Julia on first use, see:
+# https://moble.github.io/PostNewtonian.jl/dev/interface/python/
+RUN python3 -c "from sxs import julia"
 
 # Enable bash-completion by installing it and then adding it to the .bashrc file
 RUN apt-get update -y \

support/Python/requirements.txt

@@ -32,3 +32,7 @@ pyyaml
 # Rich: to format CLI output and tracebacks
 rich >= 12.0.0
 scipy
+# SXS package: to work with SXS data, waveforms, etc. Also to evaluate some
+# post-Newtonian expressions, e.g. for low-eccentricity initial orbital
+# parameters.
+sxs >= 2024.0.3