hst/fs: implement overlay fstype

This finally exposes overlay mounts in the high level hakurei API. Signed-off-by: Ophestra <cat@gensokyo.uk>
2025-08-15 03:30:51 +09:00
parent 4433c993fa
commit 9ed3ba85ea
12 changed files with 253 additions and 3 deletions
--- a/hst/template_test.go
+++ b/hst/template_test.go
@@ -103,6 +103,15 @@ func TestTemplate(t *testing.T) {
 				"write": true,
 				"perm": 493
 			},
+			{
+				"type": "overlay",
+				"dst": "/nix/store",
+				"lower": [
+					"/mnt-root/nix/.ro-store"
+				],
+				"upper": "/mnt-root/nix/.rw-store/upper",
+				"work": "/mnt-root/nix/.rw-store/work"
+			},
 			{
 				"type": "bind",
 				"src": "/nix/store"