fix(Makefile): install build-deps

Makefile

@@ -30,17 +30,39 @@ publish-pypi: clean package-pip lint-twine  ##- Publish Python packages to pypi
 
 # Used for installing build dependencies in CI.
 .PHONY: install-build-deps
-install-build-deps: install-lint-build-deps
-ifeq ($(shell which apt-get),)
-	$(warning Cannot install build dependencies without apt.)
-else ifeq ($(wildcard /usr/include/libxml2/libxml/xpath.h),)
-	sudo $(APT) install libxml2-dev libxslt1-dev python3-venv
-else ifeq ($(wildcard /usr/include/libxslt/xslt.h),)
-	sudo $(APT) install libxslt1-dev python3-venv
-else ifeq ($(wildcard /usr/share/doc/python3-venv/copyright),)
-	sudo $(APT) install python3-venv
-endif
+install-build-deps: install-lint-build-deps install-macos-build-deps install-linux-build-deps
 
 # If additional build dependencies need installing in order to build the linting env.
 .PHONY: install-lint-build-deps
 install-lint-build-deps:
+
+.PHONY: install-linux-build-deps
+install-linux-build-deps:
+ifneq ($(OS),Linux)
+else ifeq ($(shell which apt-get),)
+	$(warning apt-get not found. Please install dependencies yourself.)
+else
+	sudo $(APT) install skopeo
+	# Needed for integration testing.
+	sudo $(APT) install libyaml-dev python3-dev python3-pip python3-setuptools python3-venv python3-wheel
+	# Needed for python-apt.
+	sudo $(APT) install python-apt-dev libapt-pkg-dev clang
+endif
+ifneq ($(shell which snap),)
+	sudo snap install lxd
+endif
+ifneq ($(shell which lxd),)
+	sudo lxd init --auto
+endif
+
+.PHONY: install-macos-build-deps
+install-macos-build-deps:
+ifneq ($(OS),Darwin)
+else ifeq ($(shell which brew),)
+	$(warning brew not installed. Please install dependencies yourself.)
+else
+	brew install [email protected]  # For building pygit2
+	sudo cp -R /usr/local/opt/[email protected]/* /usr/local
+	brew install multipass
+	brew install skopeo
+endif