can just check the time instead of a new seeded bool

crypto/rand/prng.go

@@ -46,7 +46,6 @@ type PRNG struct {
 	cipher chacha20.Cipher
 	read   int
 	t      time.Time
-	seeded bool
 }
 
 // NewPRNG returns a seeded PRNG.
@@ -64,10 +63,9 @@ func NewPRNG() (*PRNG, error) {
 // Only returns an error during initial seeding if a crypto/rand read errors.
 func (p *PRNG) seed() error {
 	_, err := cryptorand.Read(p.key[:])
-	if err != nil && !p.seeded {
+	if err != nil && p.t.IsZero() {
 		return err
 	}
-	p.seeded = true
 	p.cipher.XORKeyStream(p.key[:], p.key[:])
 
 	// never errors with correct key and nonce sizes