fix(nfpm): termux platform (#4812)

closes #4810 
closes  #4809

---------

Co-authored-by: rsteube <rsteube@users.noreply.github.com>

internal/pipe/nfpm/nfpm.go

@@ -103,6 +103,7 @@ func doRun(ctx *context.Context, fpm config.NFPM) error {
 		artifact.Or(
 			artifact.ByGoos("linux"),
 			artifact.ByGoos("ios"),
+			artifact.ByGoos("android"),
 		),
 	}
 	if len(fpm.Builds) > 0 {
@@ -144,9 +145,12 @@ func mergeOverrides(fpm config.NFPM, format string) (*config.NFPMOverridables, e
 
 const termuxFormat = "termux.deb"
 
-func isSupportedTermuxArch(arch string) bool {
+func isSupportedTermuxArch(goos, goarch string) bool {
-	for _, a := range []string{"amd64", "arm64", "386"} {
+	if goos != "android" {
-		if strings.HasPrefix(arch, a) {
+		return false
+	}
+	for _, arch := range []string{"amd64", "arm64", "386"} {
+		if strings.HasPrefix(goarch, arch) {
 			return true
 		}
 	}
@@ -155,12 +159,12 @@ func isSupportedTermuxArch(arch string) bool {
 
 // arch officially only supports x86_64.
 // however, there are unofficial ports for 686, arm64, and armv7
-func isSupportedArchlinuxArch(arch, arm string) bool {
+func isSupportedArchlinuxArch(goarch, goarm string) bool {
-	if arch == "arm" && arm == "7" {
+	if goarch == "arm" && goarm == "7" {
 		return true
 	}
-	for _, a := range []string{"amd64", "arm64", "386"} {
+	for _, arch := range []string{"amd64", "arm64", "386"} {
-		if strings.HasPrefix(arch, a) {
+		if strings.HasPrefix(goarch, arch) {
 			return true
 		}
 	}
@@ -194,19 +198,25 @@ func create(ctx *context.Context, fpm config.NFPM, format string, artifacts []*a
 			return nil
 		}
 	case termuxFormat:
-		if !isSupportedTermuxArch(artifacts[0].Goarch) {
+		if !isSupportedTermuxArch(artifacts[0].Goos, artifacts[0].Goarch) {
 			log.Debugf("skipping termux.deb for %s as its not supported by termux", arch)
 			return nil
 		}
 
 		infoArch = termuxArchReplacer.Replace(infoArch)
 		arch = termuxArchReplacer.Replace(arch)
+		infoPlatform = "linux"
 		fpm.Bindir = termuxPrefixedDir(fpm.Bindir)
 		fpm.Libdirs.Header = termuxPrefixedDir(fpm.Libdirs.Header)
 		fpm.Libdirs.CArchive = termuxPrefixedDir(fpm.Libdirs.CArchive)
 		fpm.Libdirs.CShared = termuxPrefixedDir(fpm.Libdirs.CShared)
 	}
 
+	if artifacts[0].Goos == "android" && format != termuxFormat {
+		log.Debugf("skipping android packaging as its not supported by %s", format)
+		return nil
+	}
+
 	overridden, err := mergeOverrides(fpm, format)
 	if err != nil {
 		return err

internal/pipe/nfpm/nfpm_test.go

@@ -196,7 +196,7 @@ func TestRunPipe(t *testing.T) {
 			},
 		},
 	}, testctx.WithVersion("1.0.0"), testctx.WithCurrentTag("v1.0.0"))
-	for _, goos := range []string{"linux", "darwin", "ios"} {
+	for _, goos := range []string{"linux", "darwin", "ios", "android"} {
 		for _, goarch := range []string{"amd64", "386", "arm64", "arm", "mips"} {
 			if goos == "ios" && goarch != "arm64" {
 				continue
@@ -415,9 +415,12 @@ func TestRunPipe(t *testing.T) {
 			}
 		}
 
-		if pkg.Goos == "linux" {
+		switch pkg.Goos {
+		case "linux":
 			require.Equal(t, "foo_1.0.0_linux_"+arch+"-10-20"+ext, pkg.Name)
-		} else {
+		case "android":
+			require.Equal(t, "foo_1.0.0_android_"+arch+"-10-20"+ext, pkg.Name)
+		default:
 			require.Equal(t, "foo_1.0.0_ios_arm64-10-20"+ext, pkg.Name)
 		}
 		require.Equal(t, "someid", pkg.ID())
@@ -961,7 +964,7 @@ func TestDebSpecificConfig(t *testing.T) {
 				},
 			},
 		}, testctx.WithVersion("1.0.0"), testctx.WithCurrentTag("v1.0.0"))
-		for _, goos := range []string{"linux", "darwin"} {
+		for _, goos := range []string{"linux", "darwin", "android"} {
 			for _, goarch := range []string{"amd64", "386"} {
 				ctx.Artifacts.Add(&artifact.Artifact{
 					Name:   "mybin",
@@ -1619,6 +1622,15 @@ func TestTemplateExt(t *testing.T) {
 			},
 		},
 	})
+	ctx.Artifacts.Add(&artifact.Artifact{
+		Name:   "mybin",
+		Goos:   "android",
+		Goarch: "amd64",
+		Type:   artifact.Binary,
+		Extra: map[string]interface{}{
+			artifact.ExtraID: "default",
+		},
+	})
 	ctx.Artifacts.Add(&artifact.Artifact{
 		Name:   "mybin",
 		Goos:   "linux",

www/docs/customization/nfpm.md

@@ -498,6 +498,7 @@ Termux is the same format as `deb`, the differences are:
 
 - it uses a different `bindir` (prefixed with `/data/data/com.termux/files/`)
 - it uses slightly different architecture names than Debian
+- it will only package binaries built for Android
 
 ## Conventional file names, Debian, and ARMv6