diff --git a/spindle/engine_microvm_linux.go b/spindle/engine_microvm_linux.go
new file mode 100644
index 000000000..5c5551b0a
--- /dev/null
+++ b/spindle/engine_microvm_linux.go
@@ -0,0 +1,16 @@
+//go:build linux
+
+package spindle
+
+import (
+	"context"
+
+	"tangled.org/core/spindle/config"
+	"tangled.org/core/spindle/db"
+	"tangled.org/core/spindle/engines/microvm"
+	"tangled.org/core/spindle/models"
+)
+
+func newMicrovmEngine(ctx context.Context, cfg *config.Config, d *db.DB) (models.Engine, error) {
+	return microvm.New(ctx, cfg, d)
+}
diff --git a/spindle/engine_microvm_other.go b/spindle/engine_microvm_other.go
new file mode 100644
index 000000000..9da4c9fc5
--- /dev/null
+++ b/spindle/engine_microvm_other.go
@@ -0,0 +1,16 @@
+//go:build !linux
+
+package spindle
+
+import (
+	"context"
+	"fmt"
+
+	"tangled.org/core/spindle/config"
+	"tangled.org/core/spindle/db"
+	"tangled.org/core/spindle/models"
+)
+
+func newMicrovmEngine(context.Context, *config.Config, *db.DB) (models.Engine, error) {
+	return nil, fmt.Errorf("microvm engine is only supported on Linux")
+}
diff --git a/spindle/engines/microvm/agent.go b/spindle/engines/microvm/agent.go
index ed7578102..cfec1aac0 100644
--- a/spindle/engines/microvm/agent.go
+++ b/spindle/engines/microvm/agent.go
@@ -1,3 +1,5 @@
+//go:build linux
+
 package microvm
 
 import (
diff --git a/spindle/engines/microvm/args.go b/spindle/engines/microvm/args.go
index 05b370af6..0b4f1c426 100644
--- a/spindle/engines/microvm/args.go
+++ b/spindle/engines/microvm/args.go
@@ -1,3 +1,5 @@
+//go:build linux
+
 package microvm
 
 import (
diff --git a/spindle/engines/microvm/budget.go b/spindle/engines/microvm/budget.go
index 207983445..273832661 100644
--- a/spindle/engines/microvm/budget.go
+++ b/spindle/engines/microvm/budget.go
@@ -1,3 +1,5 @@
+//go:build linux
+
 package microvm
 
 import (
diff --git a/spindle/engines/microvm/dns_proxy.go b/spindle/engines/microvm/dns_proxy.go
index 16e6183a5..e6b99a0cb 100644
--- a/spindle/engines/microvm/dns_proxy.go
+++ b/spindle/engines/microvm/dns_proxy.go
@@ -1,3 +1,5 @@
+//go:build linux
+
 package microvm
 
 import (
diff --git a/spindle/engines/microvm/dns_proxy_test.go b/spindle/engines/microvm/dns_proxy_test.go
index a38b0f4e5..cb1de34ce 100644
--- a/spindle/engines/microvm/dns_proxy_test.go
+++ b/spindle/engines/microvm/dns_proxy_test.go
@@ -1,3 +1,5 @@
+//go:build linux
+
 package microvm
 
 import (
diff --git a/spindle/engines/microvm/engine.go b/spindle/engines/microvm/engine.go
index c2f141abc..7bd90c35c 100644
--- a/spindle/engines/microvm/engine.go
+++ b/spindle/engines/microvm/engine.go
@@ -1,3 +1,5 @@
+//go:build linux
+
 package microvm
 
 import (
diff --git a/spindle/engines/microvm/engine_test.go b/spindle/engines/microvm/engine_test.go
index 13465cd50..5a5aac7b7 100644
--- a/spindle/engines/microvm/engine_test.go
+++ b/spindle/engines/microvm/engine_test.go
@@ -1,3 +1,5 @@
+//go:build linux
+
 package microvm
 
 import (
diff --git a/spindle/engines/microvm/image.go b/spindle/engines/microvm/image.go
index 71518ce85..e32ad3cda 100644
--- a/spindle/engines/microvm/image.go
+++ b/spindle/engines/microvm/image.go
@@ -1,3 +1,5 @@
+//go:build linux
+
 package microvm
 
 import (
diff --git a/spindle/engines/microvm/image_test.go b/spindle/engines/microvm/image_test.go
index 3c5f66f0e..1114937c2 100644
--- a/spindle/engines/microvm/image_test.go
+++ b/spindle/engines/microvm/image_test.go
@@ -1,3 +1,5 @@
+//go:build linux
+
 package microvm
 
 import (
diff --git a/spindle/engines/microvm/models.go b/spindle/engines/microvm/models.go
index 02f3c0966..f80772c2f 100644
--- a/spindle/engines/microvm/models.go
+++ b/spindle/engines/microvm/models.go
@@ -1,3 +1,5 @@
+//go:build linux
+
 package microvm
 
 import (
diff --git a/spindle/engines/microvm/models_test.go b/spindle/engines/microvm/models_test.go
index b103e4f54..256fe1ecf 100644
--- a/spindle/engines/microvm/models_test.go
+++ b/spindle/engines/microvm/models_test.go
@@ -1,3 +1,5 @@
+//go:build linux
+
 package microvm
 
 import (
diff --git a/spindle/engines/microvm/networking.go b/spindle/engines/microvm/networking.go
index 4a7a8d6ce..e79c077f1 100644
--- a/spindle/engines/microvm/networking.go
+++ b/spindle/engines/microvm/networking.go
@@ -1,3 +1,5 @@
+//go:build linux
+
 package microvm
 
 import (
diff --git a/spindle/engines/microvm/nixos_toplevel_cache.go b/spindle/engines/microvm/nixos_toplevel_cache.go
index 1617aa2b1..a50700ef0 100644
--- a/spindle/engines/microvm/nixos_toplevel_cache.go
+++ b/spindle/engines/microvm/nixos_toplevel_cache.go
@@ -1,3 +1,5 @@
+//go:build linux
+
 package microvm
 
 import (
diff --git a/spindle/engines/microvm/qemu.go b/spindle/engines/microvm/qemu.go
index 99f325477..f7ddec42e 100644
--- a/spindle/engines/microvm/qemu.go
+++ b/spindle/engines/microvm/qemu.go
@@ -1,3 +1,5 @@
+//go:build linux
+
 package microvm
 
 import (
diff --git a/spindle/engines/microvm/read_cache_proxy.go b/spindle/engines/microvm/read_cache_proxy.go
index 885e5fe7c..0c019adbb 100644
--- a/spindle/engines/microvm/read_cache_proxy.go
+++ b/spindle/engines/microvm/read_cache_proxy.go
@@ -1,3 +1,5 @@
+//go:build linux
+
 package microvm
 
 import (
diff --git a/spindle/engines/microvm/read_cache_proxy_test.go b/spindle/engines/microvm/read_cache_proxy_test.go
index 29a6bd195..9df051016 100644
--- a/spindle/engines/microvm/read_cache_proxy_test.go
+++ b/spindle/engines/microvm/read_cache_proxy_test.go
@@ -1,3 +1,5 @@
+//go:build linux
+
 package microvm
 
 import (
diff --git a/spindle/engines/microvm/runner.go b/spindle/engines/microvm/runner.go
index c08e3d844..4ec712d16 100644
--- a/spindle/engines/microvm/runner.go
+++ b/spindle/engines/microvm/runner.go
@@ -1,3 +1,5 @@
+//go:build linux
+
 package microvm
 
 import (
diff --git a/spindle/engines/microvm/upload_cache_http.go b/spindle/engines/microvm/upload_cache_http.go
index 0310ef09f..b479616f4 100644
--- a/spindle/engines/microvm/upload_cache_http.go
+++ b/spindle/engines/microvm/upload_cache_http.go
@@ -1,3 +1,5 @@
+//go:build linux
+
 package microvm
 
 import (
diff --git a/spindle/engines/microvm/upload_cache_narinfo.go b/spindle/engines/microvm/upload_cache_narinfo.go
index 26645fcf1..775d20bcb 100644
--- a/spindle/engines/microvm/upload_cache_narinfo.go
+++ b/spindle/engines/microvm/upload_cache_narinfo.go
@@ -1,3 +1,5 @@
+//go:build linux
+
 package microvm
 
 import (
diff --git a/spindle/engines/microvm/upload_cache_nix_store.go b/spindle/engines/microvm/upload_cache_nix_store.go
index 70b9addeb..8ec22c47a 100644
--- a/spindle/engines/microvm/upload_cache_nix_store.go
+++ b/spindle/engines/microvm/upload_cache_nix_store.go
@@ -1,3 +1,5 @@
+//go:build linux
+
 package microvm
 
 import (
diff --git a/spindle/engines/microvm/upload_cache_nix_store_test.go b/spindle/engines/microvm/upload_cache_nix_store_test.go
index 413fb66d9..bf9d4af77 100644
--- a/spindle/engines/microvm/upload_cache_nix_store_test.go
+++ b/spindle/engines/microvm/upload_cache_nix_store_test.go
@@ -1,3 +1,5 @@
+//go:build linux
+
 package microvm
 
 import (
diff --git a/spindle/engines/microvm/upload_cache_proxy.go b/spindle/engines/microvm/upload_cache_proxy.go
index cc87062f8..cc4bf32ee 100644
--- a/spindle/engines/microvm/upload_cache_proxy.go
+++ b/spindle/engines/microvm/upload_cache_proxy.go
@@ -1,3 +1,5 @@
+//go:build linux
+
 package microvm
 
 import (
diff --git a/spindle/engines/microvm/upload_cache_proxy_test.go b/spindle/engines/microvm/upload_cache_proxy_test.go
index ef4e64056..5697f12f5 100644
--- a/spindle/engines/microvm/upload_cache_proxy_test.go
+++ b/spindle/engines/microvm/upload_cache_proxy_test.go
@@ -1,3 +1,5 @@
+//go:build linux
+
 package microvm
 
 import (
diff --git a/spindle/engines/microvm/vm.go b/spindle/engines/microvm/vm.go
index 35c85fa3d..14386f9f9 100644
--- a/spindle/engines/microvm/vm.go
+++ b/spindle/engines/microvm/vm.go
@@ -1,3 +1,5 @@
+//go:build linux
+
 package microvm
 
 import (
diff --git a/spindle/server.go b/spindle/server.go
index cecd2abd7..8b014fd35 100644
--- a/spindle/server.go
+++ b/spindle/server.go
@@ -39,7 +39,6 @@ import (
 	"tangled.org/core/spindle/db"
 	"tangled.org/core/spindle/engine"
 	"tangled.org/core/spindle/engines/dummy"
-	"tangled.org/core/spindle/engines/microvm"
 	"tangled.org/core/spindle/engines/nixery"
 	"tangled.org/core/spindle/git"
 	"tangled.org/core/spindle/models"
@@ -357,7 +356,7 @@ func Run(ctx context.Context) error {
 		return err
 	}
 
-	microvmEng, err := microvm.New(ctx, cfg, d)
+	microvmEng, err := newMicrovmEngine(ctx, cfg, d)
 	if err != nil {
 		return err
 	}