Add conda pkg building and uploading script.

misc/continuous_integration/conda_pkg/conda_build_upload_pyfaust.sh

+#!/bin/bash
+#set -e # won't continue any further if an error occurs
+
+# This script pupose is to build a conda pkg from wheel online pip package
+# for linux, macosx or windows (by running the script on the same system) and upload it
+
+SYSTEM_ERROR="system must be either: linux, macosx or win"
+PYVER_ERROR="python version must be in the format major_version.minor_version (e.g. 3.9)"
+META_YAML_PATH_ERROR="The meta.yaml.in filepath must exist and the filename must be meta.yaml.in"
+PYPI_FILES_URL='https://pypi.org/project/pyfaust/#files'
+TOKEN_FILE="$HOME/conda_pyfaust_token"
+
+function usage
+{
+	echo "USAGE: $0 <system> <python_version> <path_to_meta.yaml.in>"
+	echo $SYSTEM_ERROR
+	echo $PYVER_ERROR
+	echo "Note: the package must be available on pypi.org to be built and uploaded to conda repository."
+}
+
+function find_pkg
+{
+	local P OS
+	if [[ "$SYSTEM" = macosx ]]
+	then
+		OS=osx
+		P=$(dirname $CONDA_PATH_ENV_PREFIX)
+	else
+		OS=$SYSTEM
+		P=$CONDA_PATH_ENV_PREFIX
+	fi
+	find $P -iname "*.tar.bz2" | grep conda-bld | grep pyfaust | grep $OS | grep $PYVER_NODOT | grep $PYFAUST_VERSION
+}
+
+###### COMMAND-LINE PARSING
+if [ $# -lt 3 ]
+then
+	usage
+	exit 1
+fi
+
+
+if [[ "$1" =~ linux|macosx|win ]]
+then
+	SYSTEM="$1"
+else
+	echo "Error: $SYSTEM_ERROR"
+	echo
+	usage
+	exit 1
+fi
+
+if [[ "$2" =~ [[:digit:].]+ ]]
+then
+	PYVER="$2"
+	PYVER_NODOT=$(echo $PYVER | tr -d '.')
+else
+	echo "Error: $PYVER_ERROR"
+	echo
+	usage
+	exit 1
+fi
+
+if [[ ! "$3" = *meta.yaml.in || ! -r "$3" ]]
+then
+	echo "Error: $META_YAML_PATH_ERROR"
+	echo
+	usage
+	exit 2
+else
+	META_YAML_PATH="$3"
+fi
+
+[[ -n "$DEBUG" ]] && echo system=$SYSTEM
+[[ -n "$DEBUG" ]] && echo "python_version=$PYVER ($PYVER_NODOT)"
+[[ -n "$DEBUG" ]] && echo meta.yaml.in path=$META_YAML_PATH
+
+##### FIRST STEP: find the python wheel package URL on pypi.org
+
+WHL_URL=$(curl  $PYPI_FILES_URL | sed -ne 's/.*"\([^"]\{1,\}\.whl\)".*/\1/p' | grep $SYSTEM | grep $PYVER_NODOT)
+
+[[ -z "$WHL_URL" ]] && echo "No wheel package found on pypi.org for the system $SYSTEM_ERROR and the python version $PYVER" && exit 3
+
+[[ -n "$DEBUG" ]] && echo WHEEL_URL=${WHL_URL}
+
+PYFAUST_VERSION=$(echo $WHL_URL | sed -e 's/.*pyfaust-\([[:digit:].]\{1,\}\)-.*/\1/')
+[[ -n "$DEBUG" ]] && echo PYFAUST_VERSION=$PYFAUST_VERSION
+
+#### SECOND STEP: generate the meta.yaml file for conda pkg building using the meta.yaml.in model file
+mkdir -p pyfaust
+sed -e "s%@PYFAUST_VERSION@%$PYFAUST_VERSION%;s%@WHL_URL@%$WHL_URL%" $META_YAML_PATH > pyfaust/meta.yaml
+
+#### THIRD STEP: build the package using conda
+
+if ! which conda
+then
+	echo "Error: conda isn't in the PATH or is not installed."
+	exit 4
+fi
+
+# set the environment
+CONDA_ENV=build_upload_pyfaust_venv_$PYVER_NODOT
+if ! conda env list | grep $CONDA_ENV
+then
+	[[ -n "$DEBUG" ]] && echo Conda env name to create: $CONDA_ENV
+	conda create -y -n $CONDA_ENV python==$PYVER && conda run -n $CONDA_ENV conda install -y conda-build anaconda-client
+	[[ ! "$?" = 0 ]] && echo "Error: failed to setup the conda environment" && exit 5
+	#conda init bash
+fi
+# conda-activate is only for interactive shell, so use run
+#conda activate $CONDA_ENV || echo "Error: failed to activate the conda env $ENV" && exit 6
+CONDA_PATH_ENV_PREFIX=$(conda info | grep "envs directories" | head -1 | cut -d: -f2)
+PKG=$(find_pkg)
+if [[ -z "$PKG" || ! -r "$PKG" ]]
+then
+	conda run -n $CONDA_ENV conda build pyfaust
+fi
+[[ ! "$?" = 0 ]] && echo "Error: failed to build pyfaust conda package" && exit 7
+# find the package
+PKG=$(find_pkg)
+#echo pyfaust | conda run -n $CONDA_ENV anaconda login
+[[ -z "$PKG" || ! -r "$PKG" ]] && echo "Error: no built package was found in the virtual env directory." && exit 8
+[[ ! -r $TOKEN_FILE ]] && echo "Error: the anaconda token file $TOKEN wasn't found." && exit 9
+conda run -n $CONDA_ENV anaconda -t $TOKEN_FILE upload -u pyfaust $PKG
+# removing the package: conda run -n $CONDA_ENV anaconda -t ~/conda_pyfaust_token remove

misc/continuous_integration/conda_pkg/meta.yaml.in

+{% set PYFAUST_VERSION = "@PYFAUST_VERSION@" %}
+{% set WHL_URL = "@WHL_URL@" %}
+
+package:
+  name: "pyfaust"
+  version: "{{ PYFAUST_VERSION }}"
+
+build:
+  number: 0
+  script: "{{ PYTHON }} -m pip install {{ WHL_URL }} --no-deps -vv" # using the package url and not just the package name because it doesn't work (conda-build will fail on pip error it doesn't find the location of pyfaust)
+
+requirements:
+  host:
+    - pip
+    - python
+  run:
+    - python
+    - scipy
+    - numpy ==1.22
+    - matplotlib >=2.0.0
+
+test:
+  imports:
+    - pyfaust
+
+about:
+  home: https://faust.inria.fr
+  license: BSD-2
+  license_family: BSD
+  summary: 'FAµST python toolbox'
+  description: "The FAµST toolbox provides algorithms and data structures to decompose a given dense matrix into a product of sparse matrices in order to reduce its computational complexity (both for storage and manipulation).  FaµST can be used to:
+
+        - speedup / reduce the memory footprint of iterative algorithms commonly used for solving high dimensional linear inverse problems,
+
+        - learn dictionaries with an intrinsically efficient implementation,
+
+        - compute (approximate) fast Fourier transforms on graphs."
+
+