Add rpi4 distribution build

ci/build_dist_rpi4.sh

@@ -0,0 +1,35 @@
+# this script builds a full dsitribution on a RPI4
+#
+# BEWARE : this is still experimental
+#
+# USAGE : MUST be called from the top of als sources dir
+#
+#######################################################################
+set -e
+
+if [ ! -d venv ]
+then
+  python3 -m venv --system-site-packages venv
+fi
+
+. venv/bin/activate
+
+pip install --upgrade pip
+pip install --upgrade wheel
+
+patch < ci/rpi4_requirements.patch
+pip install -I -r requirements.txt
+
+python setup.py develop
+
+VERSION=$(grep __version__ src/als/__init__.py | tail -n1 | cut -d'"' -f2)
+
+if [ -z "${VERSION##*"dev"*}" ] ;then
+  VERSION=${VERSION}-$(git rev-parse --short HEAD)
+fi
+
+pyinstaller -n als-${VERSION} --windowed --hidden-import='pkg_resources.py2_warn' src/als/main.py
+
+cd dist
+
+tar zcf als-${VERSION}.tgz als-${VERSION}

ci/rpi4_requirements.patch

@@ -0,0 +1,13 @@
+diff --git a/requirements.txt b/requirements.txt
+index 0096989..ad5d1fd 100644
+--- a/requirements.txt
++++ b/requirements.txt
+@@ -2,8 +2,6 @@ astroalign==1.0.4
+ astropy==4.0.1.post1
+ dtcwt==0.12.0
+ numpy==1.16.4
+-opencv-python==4.1.0.25
+-PyQt5==5.13.0
+ pywi==0.3.dev12
+ qimage2ndarray==1.8
+ rawpy==0.13.1