diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index ee84466..ce4666f 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,7 +1,34 @@
 image: python:latest
 
-run:
+stages:
+  - build
+  - test
+  - deploy
+
+build:
+  stage: build
+  rules:
+    - when: always
+  artifacts:
+    paths:
+      - ./dist
   script:
     - source init_env.sh
     - python -m build
+
+test:
+  stage: test
+  rules:
+    - when: always
+  script:
+    - echo "Haha no tests yet"
+
+deploy:
+  stage: deploy
+  rules:
+      # only run on MRs to main
+    - if: $CI_MERGE_REQUEST_TARGET_BRANCH_NAME == "main"
+    # run on commits to main
+    - if: $CI_COMMIT_BRANCH == "main"
+  script:
     - TWINE_PASSWORD=${CI_JOB_TOKEN} TWINE_USERNAME=gitlab-ci-token python -m twine upload --repository-url ${CI_API_V4_URL}/projects/${PACKAGE_PROJECT_ID}/packages/pypi dist/*
diff --git a/pyproject.toml b/pyproject.toml
index 3d29fa5..7470434 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -33,7 +33,7 @@ name = "rtl-manifest"  # REQUIRED, is the only field that cannot be marked as dy
 #
 # For a discussion on single-sourcing the version, see
 # https://packaging.python.org/guides/single-sourcing-package-version/
-version = "0.0.1"  # REQUIRED, although can be dynamic
+version = "0.0.2"  # REQUIRED, although can be dynamic
 
 # This is a one-line description or tagline of what your project does. This
 # corresponds to the "Summary" metadata field:
diff --git a/src/rtl_manifest/rtl_manifest.py b/src/rtl_manifest/rtl_manifest.py
index 7a0aa44..beb5faf 100644
--- a/src/rtl_manifest/rtl_manifest.py
+++ b/src/rtl_manifest/rtl_manifest.py
@@ -1,4 +1,39 @@
 
+import argparse
+from typing import List
+import pathlib
+
+
 def rtl_manifest_main():
-    print("Hello, world!")
-    pass
\ No newline at end of file
+    parser = argparse.ArgumentParser(
+                    prog='rtl-manifest',
+                    description='Read in sources.list files and return a string of all source files',
+                    epilog='Made by Byron Lathi')
+
+    parser.add_argument("source")
+
+    args = parser.parse_args()
+    files = read_sources(args.source)
+
+    for file in files:
+        print(file, end = " ")
+
+    pass
+
+def read_sources(source_file: str) -> List[str]:
+    files = []
+    base_dir = pathlib.Path(source_file).parent
+
+
+    with open(source_file, "r") as file:
+        for line in file:
+            path = line.strip()
+            if (path.endswith("sources.list")):
+                new_path = pathlib.Path(base_dir) / path
+                for recursive_path in read_sources(new_path):
+                    files.append(recursive_path)
+            else:
+                abs_path = pathlib.Path(base_dir / path).absolute()
+                files.append(str(abs_path))
+
+    return files
\ No newline at end of file
diff --git a/test/sources.list b/test/sources.list
new file mode 100644
index 0000000..5b512af
--- /dev/null
+++ b/test/sources.list
@@ -0,0 +1,2 @@
+src/sub/submodule/sources.list
+src/example.sv
diff --git a/test/src/example.sv b/test/src/example.sv
new file mode 100644
index 0000000..e69de29
diff --git a/test/src/sub/submodule/other_submodule.sv b/test/src/sub/submodule/other_submodule.sv
new file mode 100644
index 0000000..e69de29
diff --git a/test/src/sub/submodule/sources.list b/test/src/sub/submodule/sources.list
new file mode 100644
index 0000000..ae7c5df
--- /dev/null
+++ b/test/src/sub/submodule/sources.list
@@ -0,0 +1,2 @@
+other_submodule.sv
+submodule_regs.rdl
\ No newline at end of file
diff --git a/test/src/sub/submodule/submodule.sv b/test/src/sub/submodule/submodule.sv
new file mode 100644
index 0000000..e69de29
diff --git a/test/src/sub/submodule/submodule_regs.rdl b/test/src/sub/submodule/submodule_regs.rdl
new file mode 100644
index 0000000..e69de29