diff --git a/core/src/main/scala-2/no/nrk/bigquery/internal/package.scala b/core/src/main/scala-2/no/nrk/bigquery/internal/package.scala
index 5c8a649c..042354b0 100644
--- a/core/src/main/scala-2/no/nrk/bigquery/internal/package.scala
+++ b/core/src/main/scala-2/no/nrk/bigquery/internal/package.scala
@@ -1,3 +1,9 @@
+/*
+ * Copyright 2020 NRK
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 package no.nrk.bigquery
 
 package object internal {
diff --git a/core/src/main/scala-3/no/nrk/bigquery/internal/Nat.scala b/core/src/main/scala-3/no/nrk/bigquery/internal/Nat.scala
index 19b6e343..ecb3961e 100644
--- a/core/src/main/scala-3/no/nrk/bigquery/internal/Nat.scala
+++ b/core/src/main/scala-3/no/nrk/bigquery/internal/Nat.scala
@@ -1,32 +1,36 @@
-package no.nrk.bigquery.internal
+/*
+ * Copyright 2020 NRK
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
-import scala.compiletime.ops.int.S
+package no.nrk.bigquery.internal
 
-trait Nat
+sealed trait Nat
 
 object nat {
 
-  type _0 = S[0] with Nat
-  type _1 = S[1] with Nat
-  type _2 = S[2] with Nat
-  type _3 = S[3] with Nat
-  type _4 = S[4] with Nat
-  type _5 = S[5] with Nat
-  type _6 = S[6] with Nat
-  type _7 = S[7] with Nat
-  type _8 = S[8] with Nat
-  type _9 = S[9] with Nat
-  type _10 = S[10] with Nat
-  type _11 = S[11] with Nat
-  type _12 = S[12] with Nat
-  type _13 = S[13] with Nat
-  type _14 = S[14] with Nat
-  type _15 = S[15] with Nat
-  type _16 = S[16] with Nat
-  type _17 = S[17] with Nat
-  type _18 = S[18] with Nat
-  type _19 = S[19] with Nat
-  type _20 = S[20] with Nat
-  type _21 = S[21] with Nat
-  type _22 = S[22] with Nat
-}
\ No newline at end of file
+  type _0 = 0 with Nat
+  type _1 = 1 with Nat
+  type _2 = 2 with Nat
+  type _3 = 3 with Nat
+  type _4 = 4 with Nat
+  type _5 = 5 with Nat
+  type _6 = 6 with Nat
+  type _7 = 7 with Nat
+  type _8 = 8 with Nat
+  type _9 = 9 with Nat
+  type _10 = 10 with Nat
+  type _11 = 11 with Nat
+  type _12 = 12 with Nat
+  type _13 = 13 with Nat
+  type _14 = 14 with Nat
+  type _15 = 15 with Nat
+  type _16 = 16 with Nat
+  type _17 = 17 with Nat
+  type _18 = 18 with Nat
+  type _19 = 19 with Nat
+  type _20 = 20 with Nat
+  type _21 = 21 with Nat
+  type _22 = 22 with Nat
+}
diff --git a/core/src/main/scala-3/no/nrk/bigquery/internal/Sized.scala b/core/src/main/scala-3/no/nrk/bigquery/internal/Sized.scala
index a264f187..2404b707 100644
--- a/core/src/main/scala-3/no/nrk/bigquery/internal/Sized.scala
+++ b/core/src/main/scala-3/no/nrk/bigquery/internal/Sized.scala
@@ -1,6 +1,12 @@
+/*
+ * Copyright 2020 NRK
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 package no.nrk.bigquery.internal
 
-final class Sized[+Repr, N <: Nat] (val unsized : Repr) {
+final class Sized[+Repr, N <: Nat](val unsized: Repr) {
   override def toString = unsized.toString
 
   override def equals(other: Any): Boolean =
@@ -12,12 +18,10 @@ final class Sized[+Repr, N <: Nat] (val unsized : Repr) {
   override def hashCode: Int = unsized.hashCode
 }
 
-
 object Sized {
 
   def apply[CC[_]] = new SizedBuilder[CC]
 
-
   def wrap[Repr, L <: Nat](r: Repr): Sized[Repr, L] =
     new Sized[Repr, L](r)
 
diff --git a/core/src/main/scala-3/no/nrk/bigquery/internal/SizedBuilder.scala b/core/src/main/scala-3/no/nrk/bigquery/internal/SizedBuilder.scala
index 3edc2d8f..2acd8927 100644
--- a/core/src/main/scala-3/no/nrk/bigquery/internal/SizedBuilder.scala
+++ b/core/src/main/scala-3/no/nrk/bigquery/internal/SizedBuilder.scala
@@ -1,3 +1,9 @@
+/*
+ * Copyright 2020 NRK
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 package no.nrk.bigquery.internal
 
 class SizedBuilder[CC[_]] {
@@ -6,22 +12,187 @@ class SizedBuilder[CC[_]] {
   def apply[A](a1: A, a2: A, a3: A) = new Sized[IndexedSeq[A], nat._3](IndexedSeq(a1, a2, a3))
   def apply[A](a1: A, a2: A, a3: A, a4: A) = new Sized[IndexedSeq[A], nat._4](IndexedSeq(a1, a2, a3, a4))
   def apply[A](a1: A, a2: A, a3: A, a4: A, a5: A) = new Sized[IndexedSeq[A], nat._5](IndexedSeq(a1, a2, a3, a4, a5))
-  def apply[A](a1: A, a2: A, a3: A, a4: A, a5: A, a6: A) = new Sized[IndexedSeq[A], nat._6](IndexedSeq(a1, a2, a3, a4, a5, a6))
-  def apply[A](a1: A, a2: A, a3: A, a4: A, a5: A, a6: A, a7: A) = new Sized[IndexedSeq[A], nat._7](IndexedSeq(a1, a2, a3, a4, a5, a6, a7))
-  def apply[A](a1: A, a2: A, a3: A, a4: A, a5: A, a6: A, a7: A, a8: A) = new Sized[IndexedSeq[A], nat._8](IndexedSeq(a1, a2, a3, a4, a5, a6, a7, a8))
-  def apply[A](a1: A, a2: A, a3: A, a4: A, a5: A, a6: A, a7: A, a8: A, a9: A) = new Sized[IndexedSeq[A], nat._9](IndexedSeq(a1, a2, a3, a4, a5, a6, a7, a8, a9))
-  def apply[A](a1: A, a2: A, a3: A, a4: A, a5: A, a6: A, a7: A, a8: A, a9: A, a10: A) = new Sized[IndexedSeq[A], nat._10](IndexedSeq(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10))
-  def apply[A](a1: A, a2: A, a3: A, a4: A, a5: A, a6: A, a7: A, a8: A, a9: A, a10: A, a11: A) = new Sized[IndexedSeq[A], nat._11](IndexedSeq(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11))
-  def apply[A](a1: A, a2: A, a3: A, a4: A, a5: A, a6: A, a7: A, a8: A, a9: A, a10: A, a11: A, a12: A) = new Sized[IndexedSeq[A], nat._12](IndexedSeq(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12))
-  def apply[A](a1: A, a2: A, a3: A, a4: A, a5: A, a6: A, a7: A, a8: A, a9: A, a10: A, a11: A, a12: A, a13: A) = new Sized[IndexedSeq[A], nat._13](IndexedSeq(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13))
-  def apply[A](a1: A, a2: A, a3: A, a4: A, a5: A, a6: A, a7: A, a8: A, a9: A, a10: A, a11: A, a12: A, a13: A, a14: A) = new Sized[IndexedSeq[A], nat._14](IndexedSeq(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14))
-  def apply[A](a1: A, a2: A, a3: A, a4: A, a5: A, a6: A, a7: A, a8: A, a9: A, a10: A, a11: A, a12: A, a13: A, a14: A, a15: A) = new Sized[IndexedSeq[A], nat._15](IndexedSeq(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14, a15))
-  def apply[A](a1: A, a2: A, a3: A, a4: A, a5: A, a6: A, a7: A, a8: A, a9: A, a10: A, a11: A, a12: A, a13: A, a14: A, a15: A, a16: A) = new Sized[IndexedSeq[A], nat._16](IndexedSeq(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14, a15, a16))
-  def apply[A](a1: A, a2: A, a3: A, a4: A, a5: A, a6: A, a7: A, a8: A, a9: A, a10: A, a11: A, a12: A, a13: A, a14: A, a15: A, a16: A, a17: A) = new Sized[IndexedSeq[A], nat._17](IndexedSeq(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14, a15, a16, a17))
-  def apply[A](a1: A, a2: A, a3: A, a4: A, a5: A, a6: A, a7: A, a8: A, a9: A, a10: A, a11: A, a12: A, a13: A, a14: A, a15: A, a16: A, a17: A, a18: A) = new Sized[IndexedSeq[A], nat._18](IndexedSeq(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14, a15, a16, a17, a18))
-  def apply[A](a1: A, a2: A, a3: A, a4: A, a5: A, a6: A, a7: A, a8: A, a9: A, a10: A, a11: A, a12: A, a13: A, a14: A, a15: A, a16: A, a17: A, a18: A, a19: A) = new Sized[IndexedSeq[A], nat._19](IndexedSeq(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19))
-  def apply[A](a1: A, a2: A, a3: A, a4: A, a5: A, a6: A, a7: A, a8: A, a9: A, a10: A, a11: A, a12: A, a13: A, a14: A, a15: A, a16: A, a17: A, a18: A, a19: A, a20: A) = new Sized[IndexedSeq[A], nat._20](IndexedSeq(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20))
-  def apply[A](a1: A, a2: A, a3: A, a4: A, a5: A, a6: A, a7: A, a8: A, a9: A, a10: A, a11: A, a12: A, a13: A, a14: A, a15: A, a16: A, a17: A, a18: A, a19: A, a20: A, a21: A) = new Sized[IndexedSeq[A], nat._21](IndexedSeq(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20, a21))
-  def apply[A](a1: A, a2: A, a3: A, a4: A, a5: A, a6: A, a7: A, a8: A, a9: A, a10: A, a11: A, a12: A, a13: A, a14: A, a15: A, a16: A, a17: A, a18: A, a19: A, a20: A, a21: A, a22: A) = new Sized[IndexedSeq[A], nat._22](IndexedSeq(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20, a21, a22))
+  def apply[A](a1: A, a2: A, a3: A, a4: A, a5: A, a6: A) =
+    new Sized[IndexedSeq[A], nat._6](IndexedSeq(a1, a2, a3, a4, a5, a6))
+  def apply[A](a1: A, a2: A, a3: A, a4: A, a5: A, a6: A, a7: A) =
+    new Sized[IndexedSeq[A], nat._7](IndexedSeq(a1, a2, a3, a4, a5, a6, a7))
+  def apply[A](a1: A, a2: A, a3: A, a4: A, a5: A, a6: A, a7: A, a8: A) =
+    new Sized[IndexedSeq[A], nat._8](IndexedSeq(a1, a2, a3, a4, a5, a6, a7, a8))
+  def apply[A](a1: A, a2: A, a3: A, a4: A, a5: A, a6: A, a7: A, a8: A, a9: A) =
+    new Sized[IndexedSeq[A], nat._9](IndexedSeq(a1, a2, a3, a4, a5, a6, a7, a8, a9))
+  def apply[A](a1: A, a2: A, a3: A, a4: A, a5: A, a6: A, a7: A, a8: A, a9: A, a10: A) =
+    new Sized[IndexedSeq[A], nat._10](IndexedSeq(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10))
+  def apply[A](a1: A, a2: A, a3: A, a4: A, a5: A, a6: A, a7: A, a8: A, a9: A, a10: A, a11: A) =
+    new Sized[IndexedSeq[A], nat._11](IndexedSeq(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11))
+  def apply[A](a1: A, a2: A, a3: A, a4: A, a5: A, a6: A, a7: A, a8: A, a9: A, a10: A, a11: A, a12: A) =
+    new Sized[IndexedSeq[A], nat._12](IndexedSeq(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12))
+  def apply[A](a1: A, a2: A, a3: A, a4: A, a5: A, a6: A, a7: A, a8: A, a9: A, a10: A, a11: A, a12: A, a13: A) =
+    new Sized[IndexedSeq[A], nat._13](IndexedSeq(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13))
+  def apply[A](a1: A, a2: A, a3: A, a4: A, a5: A, a6: A, a7: A, a8: A, a9: A, a10: A, a11: A, a12: A, a13: A, a14: A) =
+    new Sized[IndexedSeq[A], nat._14](IndexedSeq(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14))
+  def apply[A](
+      a1: A,
+      a2: A,
+      a3: A,
+      a4: A,
+      a5: A,
+      a6: A,
+      a7: A,
+      a8: A,
+      a9: A,
+      a10: A,
+      a11: A,
+      a12: A,
+      a13: A,
+      a14: A,
+      a15: A) =
+    new Sized[IndexedSeq[A], nat._15](IndexedSeq(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14, a15))
+  def apply[A](
+      a1: A,
+      a2: A,
+      a3: A,
+      a4: A,
+      a5: A,
+      a6: A,
+      a7: A,
+      a8: A,
+      a9: A,
+      a10: A,
+      a11: A,
+      a12: A,
+      a13: A,
+      a14: A,
+      a15: A,
+      a16: A) =
+    new Sized[IndexedSeq[A], nat._16](IndexedSeq(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14, a15, a16))
+  def apply[A](
+      a1: A,
+      a2: A,
+      a3: A,
+      a4: A,
+      a5: A,
+      a6: A,
+      a7: A,
+      a8: A,
+      a9: A,
+      a10: A,
+      a11: A,
+      a12: A,
+      a13: A,
+      a14: A,
+      a15: A,
+      a16: A,
+      a17: A) = new Sized[IndexedSeq[A], nat._17](
+    IndexedSeq(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14, a15, a16, a17))
+  def apply[A](
+      a1: A,
+      a2: A,
+      a3: A,
+      a4: A,
+      a5: A,
+      a6: A,
+      a7: A,
+      a8: A,
+      a9: A,
+      a10: A,
+      a11: A,
+      a12: A,
+      a13: A,
+      a14: A,
+      a15: A,
+      a16: A,
+      a17: A,
+      a18: A) = new Sized[IndexedSeq[A], nat._18](
+    IndexedSeq(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14, a15, a16, a17, a18))
+  def apply[A](
+      a1: A,
+      a2: A,
+      a3: A,
+      a4: A,
+      a5: A,
+      a6: A,
+      a7: A,
+      a8: A,
+      a9: A,
+      a10: A,
+      a11: A,
+      a12: A,
+      a13: A,
+      a14: A,
+      a15: A,
+      a16: A,
+      a17: A,
+      a18: A,
+      a19: A) = new Sized[IndexedSeq[A], nat._19](
+    IndexedSeq(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19))
+  def apply[A](
+      a1: A,
+      a2: A,
+      a3: A,
+      a4: A,
+      a5: A,
+      a6: A,
+      a7: A,
+      a8: A,
+      a9: A,
+      a10: A,
+      a11: A,
+      a12: A,
+      a13: A,
+      a14: A,
+      a15: A,
+      a16: A,
+      a17: A,
+      a18: A,
+      a19: A,
+      a20: A) = new Sized[IndexedSeq[A], nat._20](
+    IndexedSeq(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20))
+  def apply[A](
+      a1: A,
+      a2: A,
+      a3: A,
+      a4: A,
+      a5: A,
+      a6: A,
+      a7: A,
+      a8: A,
+      a9: A,
+      a10: A,
+      a11: A,
+      a12: A,
+      a13: A,
+      a14: A,
+      a15: A,
+      a16: A,
+      a17: A,
+      a18: A,
+      a19: A,
+      a20: A,
+      a21: A) = new Sized[IndexedSeq[A], nat._21](
+    IndexedSeq(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20, a21))
+  def apply[A](
+      a1: A,
+      a2: A,
+      a3: A,
+      a4: A,
+      a5: A,
+      a6: A,
+      a7: A,
+      a8: A,
+      a9: A,
+      a10: A,
+      a11: A,
+      a12: A,
+      a13: A,
+      a14: A,
+      a15: A,
+      a16: A,
+      a17: A,
+      a18: A,
+      a19: A,
+      a20: A,
+      a21: A,
+      a22: A) = new Sized[IndexedSeq[A], nat._22](
+    IndexedSeq(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20, a21, a22))
 
 }
diff --git a/core/src/main/scala/no/nrk/bigquery/internal/BQShowSyntax.scala b/core/src/main/scala/no/nrk/bigquery/internal/BQShowSyntax.scala
index bd0a14b1..a9ff8b79 100644
--- a/core/src/main/scala/no/nrk/bigquery/internal/BQShowSyntax.scala
+++ b/core/src/main/scala/no/nrk/bigquery/internal/BQShowSyntax.scala
@@ -17,6 +17,8 @@ trait BQShowSyntax extends UdfSyntax {
   implicit def bqShowInterpolator(sc: StringContext): BQShow.BQShowInterpolator = new BQShow.BQShowInterpolator(sc)
   implicit def bqShowOps[A](a: A): BQShowOps[A] = new BQShowOps[A](a)
   implicit def bqFragmentsOps[S[_]: Foldable, A](values: S[A]): FragmentsOps[S, A] = new FragmentsOps(values)
+  implicit def bqFragmentsOpsIndexedSeq[A](values: IndexedSeq[A]): FragmentsOps[IndexedSeq, A] = new FragmentsOps(
+    values.toVector)
   implicit def bqFilledTableLocalDateOps(fill: BQFilledTable[LocalDate]): BQFilledTableLocalDateOps =
     new BQFilledTableLocalDateOps(fill)
 
@@ -30,7 +32,7 @@ class BQShowOps[A](a: A) {
 
 /** A way to flatten a list of fragments. The `S` just means it works for any collection data structure
   */
-class FragmentsOps[S[_]: Foldable, A](private val values: S[A]) {
+class FragmentsOps[+S[_]: Foldable, A](private val values: S[A]) {
   def mkFragment(sep: String)(implicit T: BQShow[A]): BQSqlFrag =
     mkFragment(BQSqlFrag(sep))
 
diff --git a/core/src/main/scala/no/nrk/bigquery/internal/UdfSyntax.scala b/core/src/main/scala/no/nrk/bigquery/internal/UdfSyntax.scala
index eb4dae21..7c9f7725 100644
--- a/core/src/main/scala/no/nrk/bigquery/internal/UdfSyntax.scala
+++ b/core/src/main/scala/no/nrk/bigquery/internal/UdfSyntax.scala
@@ -1,3 +1,9 @@
+/*
+ * Copyright 2020 NRK
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 package no.nrk.bigquery.internal
 
 import no.nrk.bigquery.{BQSqlFrag, UDF}
diff --git a/core/src/test/scala/no/nrk/bigquery/UDFTest.scala b/core/src/test/scala/no/nrk/bigquery/UDFTest.scala
index dec81649..f2f19c6d 100644
--- a/core/src/test/scala/no/nrk/bigquery/UDFTest.scala
+++ b/core/src/test/scala/no/nrk/bigquery/UDFTest.scala
@@ -8,7 +8,7 @@ package no.nrk.bigquery
 
 import munit.FunSuite
 import no.nrk.bigquery.syntax._
-import shapeless._0
+import no.nrk.bigquery.internal.nat._0
 
 class UDFTest extends FunSuite {
 
diff --git a/core/src/test/scala/no/nrk/bigquery/internal/UdfUpdateOperationTest.scala b/core/src/test/scala/no/nrk/bigquery/internal/UdfUpdateOperationTest.scala
index 96ac3772..8b6dbf54 100644
--- a/core/src/test/scala/no/nrk/bigquery/internal/UdfUpdateOperationTest.scala
+++ b/core/src/test/scala/no/nrk/bigquery/internal/UdfUpdateOperationTest.scala
@@ -11,7 +11,7 @@ import munit.FunSuite
 import no.nrk.bigquery.UpdateOperation.{CreatePersistentUdf, Illegal, UpdatePersistentUdf}
 import no.nrk.bigquery._
 import no.nrk.bigquery.syntax._
-import shapeless._0
+import no.nrk.bigquery.internal.nat._0
 
 class UdfUpdateOperationTest extends FunSuite {