diff --git a/cfg.go b/cfg.go
index f71f673..53b30f5 100644
--- a/cfg.go
+++ b/cfg.go
@@ -68,6 +68,9 @@ func Marshal(e Encoding, v any) ([]byte, error) {
 	case TOML:
 		return toml.Marshal(v)
 	case NIX:
+		if nixfig.Fmt != nil {
+			return nixfig.MarshalFormat(v)
+		}
 		return nixfig.Marshal(v)
 	case KDL:
 		return kdl.Marshal(v)
diff --git a/go.mod b/go.mod
index a75721c..1be84f7 100644
--- a/go.mod
+++ b/go.mod
@@ -8,7 +8,7 @@ require (
 	github.com/philandstuff/dhall-golang/v6 v6.0.2
 	github.com/sblinch/kdl-go v0.0.0-20240410000746-21754ba9ac55
 	github.com/tailscale/hujson v0.0.0-20221223112325-20486734a56a
-	go.jolheiser.com/nixfig v0.0.0-20231129190849-8b2170b2ecda
+	go.jolheiser.com/nixfig v0.0.0-20240620014425-c1d5ec9d077a
 	gopkg.in/yaml.v3 v3.0.1
 )
 
diff --git a/go.mod.sri b/go.mod.sri
index 44410ee..112a9d3 100644
--- a/go.mod.sri
+++ b/go.mod.sri
@@ -1 +1 @@
-sha256-IKdsBsOJ41qh/d2ZxgkY0IihIGieYlTtdHRmFufS+yQ=
\ No newline at end of file
+sha256-UbjwyV55TOyTXiYZCdTmwinZ0SGLRS95qYmvD4odnnM=
\ No newline at end of file
diff --git a/go.sum b/go.sum
index 357afc9..906a790 100644
--- a/go.sum
+++ b/go.sum
@@ -60,6 +60,12 @@ github.com/x448/float16 v0.8.4 h1:qLwI1I70+NjRFUR3zs1JPUCgaCXSh3SW62uAKT1mSBM=
 github.com/x448/float16 v0.8.4/go.mod h1:14CWIYCyZA/cWjXOioeEpHeN/83MdbZDRQHoFcYsOfg=
 go.jolheiser.com/nixfig v0.0.0-20231129190849-8b2170b2ecda h1:TdrB7ewFKHdv61ziR0Fzhj6zalgyjXdjBZIJJcdTohc=
 go.jolheiser.com/nixfig v0.0.0-20231129190849-8b2170b2ecda/go.mod h1:GlnM735CZXZdJ7v9CMZ8Xjw1gZTrDXJ66Ak+jNwlwNU=
+go.jolheiser.com/nixfig v0.0.0-20240620013146-d3931c448175 h1:PDwpdixizHZQbU6DrXQCtMmnuTCPFivBUw7th2Fs+2k=
+go.jolheiser.com/nixfig v0.0.0-20240620013146-d3931c448175/go.mod h1:ua/+4W7HyAsknnkU2gT2jzuURFx0cImj7Uht27606TY=
+go.jolheiser.com/nixfig v0.0.0-20240620014138-f34fba6b99d6 h1:TB+c0tNI8bLvn+AddMV8Vy2r0zGRmZEkC4yhICrC7ts=
+go.jolheiser.com/nixfig v0.0.0-20240620014138-f34fba6b99d6/go.mod h1:ua/+4W7HyAsknnkU2gT2jzuURFx0cImj7Uht27606TY=
+go.jolheiser.com/nixfig v0.0.0-20240620014425-c1d5ec9d077a h1:KMiVqwvnDM3wpW7LmFb0W64HM2X7JZRXusGRrwGsYak=
+go.jolheiser.com/nixfig v0.0.0-20240620014425-c1d5ec9d077a/go.mod h1:ua/+4W7HyAsknnkU2gT2jzuURFx0cImj7Uht27606TY=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3 h1:0GoQqolDA55aaLxZyTzK/Y2ePZzZTUrRacwib7cNsYQ=