4 files changed, 19 insertions, 15 deletions
diff --git a/cmd/hpkg/app.go b/cmd/hpkg/app.go
index da1fd301..d0092d14 100644
--- a/cmd/hpkg/app.go
+++ b/cmd/hpkg/app.go
@@ -6,6 +6,7 @@ import (
 	"os"
 
 	"hakurei.app/container"
+	"hakurei.app/container/check"
 	"hakurei.app/hst"
 )
 
@@ -54,14 +55,14 @@ type appInfo struct {
 	// store path to nixGL source
 	NixGL string `json:"nix_gl,omitempty"`
 	// store path to activate-and-exec script
-	Launcher *container.Absolute `json:"launcher"`
+	Launcher *check.Absolute `json:"launcher"`
 	// store path to /run/current-system
-	CurrentSystem *container.Absolute `json:"current_system"`
+	CurrentSystem *check.Absolute `json:"current_system"`
 	// store path to home-manager activation package
 	ActivationPackage string `json:"activation_package"`
 }
 
-func (app *appInfo) toHst(pathSet *appPathSet, pathname *container.Absolute, argv []string, flagDropShell bool) *hst.Config {
+func (app *appInfo) toHst(pathSet *appPathSet, pathname *check.Absolute, argv []string, flagDropShell bool) *hst.Config {
 	config := &hst.Config{
 		ID: app.ID,
 
diff --git a/cmd/hpkg/main.go b/cmd/hpkg/main.go
index 03247aac..dde0ca2b 100644
--- a/cmd/hpkg/main.go
+++ b/cmd/hpkg/main.go
@@ -12,6 +12,7 @@ import (
 
 	"hakurei.app/command"
 	"hakurei.app/container"
+	"hakurei.app/container/check"
 	"hakurei.app/hst"
 )
 
@@ -79,11 +80,11 @@ func main() {
 				Extract package and set up for cleanup.
 			*/
 
-			var workDir *container.Absolute
+			var workDir *check.Absolute
 			if p, err := os.MkdirTemp("", "hpkg.*"); err != nil {
 				log.Printf("cannot create temporary directory: %v", err)
 				return err
-			} else if workDir, err = container.NewAbs(p); err != nil {
+			} else if workDir, err = check.NewAbs(p); err != nil {
 				log.Printf("invalid temporary directory: %v", err)
 				return err
 			}
diff --git a/cmd/hpkg/paths.go b/cmd/hpkg/paths.go
index ee4b7e71..c1d9ae3a 100644
--- a/cmd/hpkg/paths.go
+++ b/cmd/hpkg/paths.go
@@ -8,18 +8,19 @@ import (
 	"sync/atomic"
 
 	"hakurei.app/container"
+	"hakurei.app/container/check"
 	"hakurei.app/hst"
 )
 
 const bash = "bash"
 
 var (
-	dataHome *container.Absolute
+	dataHome *check.Absolute
 )
 
 func init() {
 	// dataHome
-	if a, err := container.NewAbs(os.Getenv("HAKUREI_DATA_HOME")); err == nil {
+	if a, err := check.NewAbs(os.Getenv("HAKUREI_DATA_HOME")); err == nil {
 		dataHome = a
 	} else {
 		dataHome = container.AbsFHSVarLib.Append("hakurei/" + strconv.Itoa(os.Getuid()))
@@ -29,13 +30,13 @@ func init() {
 var (
 	pathBin = container.AbsFHSRoot.Append("bin")
 
-	pathNix           = container.MustAbs("/nix/")
+	pathNix           = check.MustAbs("/nix/")
 	pathNixStore      = pathNix.Append("store/")
 	pathCurrentSystem = container.AbsFHSRun.Append("current-system")
 	pathSwBin         = pathCurrentSystem.Append("sw/bin/")
 	pathShell         = pathSwBin.Append(bash)
 
-	pathData     = container.MustAbs("/data")
+	pathData     = check.MustAbs("/data")
 	pathDataData = pathData.Append("data")
 )
 
@@ -64,15 +65,15 @@ func mustRun(msg container.Msg, name string, arg ...string) {
 
 type appPathSet struct {
 	// ${dataHome}/${id}
-	baseDir *container.Absolute
+	baseDir *check.Absolute
 	// ${baseDir}/app
-	metaPath *container.Absolute
+	metaPath *check.Absolute
 	// ${baseDir}/files
-	homeDir *container.Absolute
+	homeDir *check.Absolute
 	// ${baseDir}/cache
-	cacheDir *container.Absolute
+	cacheDir *check.Absolute
 	// ${baseDir}/cache/nix
-	nixPath *container.Absolute
+	nixPath *check.Absolute
 }
 
 func pathSetByApp(id string) *appPathSet {
diff --git a/cmd/hpkg/with.go b/cmd/hpkg/with.go
index b3ccd47a..99de04d5 100644
--- a/cmd/hpkg/with.go
+++ b/cmd/hpkg/with.go
@@ -6,6 +6,7 @@ import (
 	"strings"
 
 	"hakurei.app/container"
+	"hakurei.app/container/check"
 	"hakurei.app/hst"
 )
 
@@ -63,7 +64,7 @@ func withNixDaemon(
 func withCacheDir(
 	ctx context.Context,
 	msg container.Msg,
-	action string, command []string, workDir *container.Absolute,
+	action string, command []string, workDir *check.Absolute,
 	app *appInfo, pathSet *appPathSet, dropShell bool, beforeFail func()) {
 	mustRunAppDropShell(ctx, msg, &hst.Config{
 		ID: app.ID,