drop cgo requirement

backend/pkgs/cgofreesqlite/sqlite.go

@@ -0,0 +1,40 @@
+// sqlite package provides a CGO free implementation of the sqlite3 driver. This wraps the
+// modernc.org/sqlite driver and adds the PRAGMA foreign_keys = ON; statement to the connection
+// initialization as well as registering the driver with the sql package as "sqlite3" for compatibility
+// with entgo.io
+//
+// NOTE: This does come with around a 30% performance hit compared to the CGO version of the driver.
+// however it greatly simplifies the build process and allows for cross compilation.
+package cgofreesqlite
+
+import (
+	"database/sql"
+	"database/sql/driver"
+
+	"modernc.org/sqlite"
+)
+
+type CGOFreeSqliteDriver struct {
+	*sqlite.Driver
+}
+
+type sqlite3DriverConn interface {
+	Exec(string, []driver.Value) (driver.Result, error)
+}
+
+func (d CGOFreeSqliteDriver) Open(name string) (conn driver.Conn, err error) {
+	conn, err = d.Driver.Open(name)
+	if err != nil {
+		return nil, err
+	}
+	_, err = conn.(sqlite3DriverConn).Exec("PRAGMA foreign_keys = ON;", nil)
+	if err != nil {
+		_ = conn.Close()
+		return nil, err
+	}
+	return conn, err
+}
+
+func init() {
+	sql.Register("sqlite3", CGOFreeSqliteDriver{Driver: &sqlite.Driver{}})
+}