diff -Nru golang-github-alecthomas-units-0.0~git20210927.59d0afb/bytes.go golang-github-alecthomas-units-0.0~git20211218.b94a6e3/bytes.go
--- golang-github-alecthomas-units-0.0~git20210927.59d0afb/bytes.go	2021-11-17 21:13:53.000000000 +0000
+++ golang-github-alecthomas-units-0.0~git20211218.b94a6e3/bytes.go	2021-12-18 09:36:45.000000000 +0000
@@ -72,6 +72,43 @@
 	}
 }
 
+// Round returns Base2Bytes with all but the first n units zeroed out. So that e.g. 1GiB1MiB1KiB → 1GiB1MiB, if n is 2.
+func (b Base2Bytes) Round(n int) Base2Bytes {
+	idx := 0
+
+	switch {
+	case b > Exbibyte:
+		idx = n
+	case b > Pebibyte:
+		idx = n + 1
+	case b > Tebibyte:
+		idx = n + 2
+	case b > Gibibyte:
+		idx = n + 3
+	case b > Mebibyte:
+		idx = n + 4
+	case b > Kibibyte:
+		idx = n + 5
+	}
+
+	switch idx {
+	case 1:
+		return b - b%Exbibyte
+	case 2:
+		return b - b%Pebibyte
+	case 3:
+		return b - b%Tebibyte
+	case 4:
+		return b - b%Gibibyte
+	case 5:
+		return b - b%Mebibyte
+	case 6:
+		return b - b%Kibibyte
+	default:
+		return b
+	}
+}
+
 var metricBytesUnitMap = MakeUnitMap("B", "B", 1000)
 
 // MetricBytes are SI byte units (1000 bytes in a kilobyte).
@@ -122,6 +159,43 @@
 	default:
 		return b
 	}
+}
+
+// Round returns MetricBytes with all but the first n units zeroed out. So that e.g. 1GB1MB1KB → 1GB1MB, if n is 2.
+func (b MetricBytes) Round(n int) MetricBytes {
+	idx := 0
+
+	switch {
+	case b > Exabyte:
+		idx = n
+	case b > Petabyte:
+		idx = n + 1
+	case b > Terabyte:
+		idx = n + 2
+	case b > Gigabyte:
+		idx = n + 3
+	case b > Megabyte:
+		idx = n + 4
+	case b > Kilobyte:
+		idx = n + 5
+	}
+
+	switch idx {
+	case 1:
+		return b - b%Exabyte
+	case 2:
+		return b - b%Petabyte
+	case 3:
+		return b - b%Terabyte
+	case 4:
+		return b - b%Gigabyte
+	case 5:
+		return b - b%Megabyte
+	case 6:
+		return b - b%Kilobyte
+	default:
+		return b
+	}
 }
 
 // ParseStrictBytes supports both iB and B suffixes for base 2 and metric,
diff -Nru golang-github-alecthomas-units-0.0~git20210927.59d0afb/bytes_test.go golang-github-alecthomas-units-0.0~git20211218.b94a6e3/bytes_test.go
--- golang-github-alecthomas-units-0.0~git20210927.59d0afb/bytes_test.go	2021-11-17 21:13:53.000000000 +0000
+++ golang-github-alecthomas-units-0.0~git20211218.b94a6e3/bytes_test.go	2021-12-18 09:36:45.000000000 +0000
@@ -72,7 +72,7 @@
 	assert.Equal(t, 1572864, int(n))
 }
 
-func TestBase2RoundToLargest(t *testing.T) {
+func TestBase2Floor(t *testing.T) {
 	var n Base2Bytes = KiB
 	assert.Equal(t, "1KiB", n.Floor().String())
 	n = MiB + KiB
@@ -83,6 +83,25 @@
 	assert.Equal(t, "3GiB", n.Floor().String())
 }
 
+func TestBase2Round(t *testing.T) {
+	var n Base2Bytes = KiB
+	assert.Equal(t, "1KiB", n.Round(1).String())
+	n = MiB + KiB
+	assert.Equal(t, "1MiB", n.Round(1).String())
+	n = GiB + MiB + KiB
+	assert.Equal(t, "1GiB", n.Round(1).String())
+	n = 3*GiB + 2*MiB + KiB
+	assert.Equal(t, "3GiB", n.Round(1).String())
+	n = KiB
+	assert.Equal(t, "1KiB", n.Round(2).String())
+	n = MiB + KiB
+	assert.Equal(t, "1MiB1KiB", n.Round(2).String())
+	n = GiB + MiB + KiB
+	assert.Equal(t, "1GiB1MiB", n.Round(2).String())
+	n = 3*GiB + 2*MiB + KiB
+	assert.Equal(t, "3GiB2MiB", n.Round(2).String())
+}
+
 func TestMetricBytesString(t *testing.T) {
 	assert.Equal(t, MetricBytes(0).String(), "0B")
 	// TODO: SI standard prefix is lowercase "kB"
@@ -142,7 +161,7 @@
 	assert.Equal(t, 1500000, int(n))
 }
 
-func TestMetricRoundToLargest(t *testing.T) {
+func TestMetricFloor(t *testing.T) {
 	var n MetricBytes = KB
 	assert.Equal(t, "1KB", n.Floor().String())
 	n = MB + KB
@@ -153,6 +172,25 @@
 	assert.Equal(t, "3GB", n.Floor().String())
 }
 
+func TestMetricRound(t *testing.T) {
+	var n MetricBytes = KB
+	assert.Equal(t, "1KB", n.Round(1).String())
+	n = MB + KB
+	assert.Equal(t, "1MB", n.Round(1).String())
+	n = GB + MB + KB
+	assert.Equal(t, "1GB", n.Round(1).String())
+	n = 3*GB + 2*MB + KB
+	assert.Equal(t, "3GB", n.Round(1).String())
+	n = KB
+	assert.Equal(t, "1KB", n.Round(2).String())
+	n = MB + KB
+	assert.Equal(t, "1MB1KB", n.Round(2).String())
+	n = GB + MB + KB
+	assert.Equal(t, "1GB1MB", n.Round(2).String())
+	n = 3*GB + 2*MB + KB
+	assert.Equal(t, "3GB2MB", n.Round(2).String())
+}
+
 func TestJSON(t *testing.T) {
 	type args struct {
 		b Base2Bytes
diff -Nru golang-github-alecthomas-units-0.0~git20210927.59d0afb/debian/changelog golang-github-alecthomas-units-0.0~git20211218.b94a6e3/debian/changelog
--- golang-github-alecthomas-units-0.0~git20210927.59d0afb/debian/changelog	2021-11-17 21:30:00.000000000 +0000
+++ golang-github-alecthomas-units-0.0~git20211218.b94a6e3/debian/changelog	2021-12-20 14:50:35.000000000 +0000
@@ -1,3 +1,12 @@
+golang-github-alecthomas-units (0.0~git20211218.b94a6e3-1) unstable; urgency=medium
+
+  * Team upload.
+  * New upstream snapshot.
+  * Add a new debian/gitlab-ci-yml file.
+  * Mark -dev package as Multi-Arch: foreign.
+
+ -- Guillem Jover <gjover@sipwise.com>  Mon, 20 Dec 2021 15:50:35 +0100
+
 golang-github-alecthomas-units (0.0~git20210927.59d0afb-1) unstable; urgency=medium
 
   * Team upload.
@@ -6,7 +15,7 @@
   * Remove constraints unnecessary since buster.
 
   [ Guillem Jover ]
-  * New upstream release.
+  * New upstream snapshot.
   * Update gbp.conf to stop using pristine-tar workflow.
   * Switch to dh-sequence-golang from dh-golang and --with=golang.
   * Switch to Standards-Version 4.6.0 (no changes needed).
diff -Nru golang-github-alecthomas-units-0.0~git20210927.59d0afb/debian/control golang-github-alecthomas-units-0.0~git20211218.b94a6e3/debian/control
--- golang-github-alecthomas-units-0.0~git20210927.59d0afb/debian/control	2021-11-17 21:20:38.000000000 +0000
+++ golang-github-alecthomas-units-0.0~git20211218.b94a6e3/debian/control	2021-12-20 14:48:54.000000000 +0000
@@ -17,6 +17,7 @@
 
 Package: golang-github-alecthomas-units-dev
 Architecture: all
+Multi-Arch: foreign
 Depends: ${misc:Depends},
 Description: Go package for parsing byte units
  This package provides multipliers and string conversion functions
diff -Nru golang-github-alecthomas-units-0.0~git20210927.59d0afb/debian/gitlab-ci.yml golang-github-alecthomas-units-0.0~git20211218.b94a6e3/debian/gitlab-ci.yml
--- golang-github-alecthomas-units-0.0~git20210927.59d0afb/debian/gitlab-ci.yml	1970-01-01 00:00:00.000000000 +0000
+++ golang-github-alecthomas-units-0.0~git20211218.b94a6e3/debian/gitlab-ci.yml	2021-12-20 14:48:54.000000000 +0000
@@ -0,0 +1,6 @@
+# auto-generated, DO NOT MODIFY.
+# The authoritative copy of this file lives at:
+# https://salsa.debian.org/go-team/infra/pkg-go-tools/blob/master/config/gitlabciyml.go
+---
+include:
+  - https://salsa.debian.org/go-team/infra/pkg-go-tools/-/raw/master/pipeline/test-archive.yml