1 files changed, 33 insertions, 0 deletions
diff --git a/archinstall/lib/pacman/config.py b/archinstall/lib/pacman/config.py
new file mode 100644
index 00000000..60d202bc
--- /dev/null
+++ b/archinstall/lib/pacman/config.py
@@ -0,0 +1,33 @@
+import re
+from pathlib import Path
+from shutil import copy2
+from typing import List
+
+from .repo import Repo
+
+
+class Config:
+	def __init__(self, target: Path):
+		self.path = Path("/etc") / "pacman.conf"
+		self.chroot_path = target / "etc" / "pacman.conf"
+		self.patterns: List[re.Pattern] = []
+
+	def enable(self, repo: Repo):
+		self.patterns.append(re.compile(r"^#\s*\[{}\]$".format(repo.value)))
+
+	def apply(self):
+		if not self.patterns:
+			return
+		lines = iter(self.path.read_text().splitlines(keepends=True))
+		with open(self.path, 'w') as f:
+			for line in lines:
+				if any(pattern.match(line) for pattern in self.patterns):
+					# Uncomment this line and the next.
+					f.write(line.lstrip('#'))
+					f.write(next(lines).lstrip('#'))
+				else:
+					f.write(line)
+	
+	def persist(self):
+		if self.patterns:
+			copy2(self.path, self.chroot_path)