Fix build.

Makefile

@@ -1,4 +1,4 @@
-.PHONY : env update-lock install cov init update
+.PHONY : env update-lock install test cov type-check linting-check init update build
 .DEFAULT_GOAL := init
 
 env :
@@ -10,8 +10,19 @@ update-lock :
 install :
 	poetry install --no-interaction
 
+test :
+	poetry run pytest
+
 cov :
 	poetry run pytest --cov=fhir_converter --cov-report=html
 
+type-check :
+	poetry run mypy fhir_converter
+
+linting-check :
+	poetry run flake8 fhir_converter --count --select=E9,F63,F7,F82 --show-source --statistics    
+	poetry run flake8 fhir_converter --count --ignore=E203,E721 --exit-zero --max-complexity=10 --max-line-length=120 --statistics
+
 init: env install
-update : update-lock install
+update : update-lock install
+build : linting-check type-check cov

pyproject.toml

@@ -45,13 +45,15 @@ frozendict = "2.3.10"
 importlib_resources = "6.1.1"
 psutil = "5.9.7"
 isodate = "0.6.1"
+lxml = "5.3.0"
 
 [tool.poetry.group.dev.dependencies]
 pytest = "7.4.4"
 pytest-mock = "3.12.0"
 pytest-cov = "4.1.0"
 types-xmltodict = "0.13.0.3"
 types-psutil = "5.9.5.17"
+types-lxml = "2024.8.7"
 flake8 = "7.0.0"
 mypy = "1.8.0"
 smokeshow = "0.4.0"