feat: termux.deb (#3333)

termux support, built from #3258 :

minor code changes
support for 386 as well
docs
tests

closes #3118
closes #3258

Signed-off-by: Carlos A Becker <caarlos0@users.noreply.github.com>
Co-authored-by: rsteube <rsteube@users.noreply.github.com>

internal/pipe/nfpm/nfpm.go

@@ -121,11 +121,39 @@ func mergeOverrides(fpm config.NFPM, format string) (*config.NFPMOverridables, e
 	return &overridden, nil
 }
 
+const termuxFormat = "termux.deb"
+
+func isSupportedTermuxArch(arch string) bool {
+	for _, a := range []string{"amd64", "arm64", "386"} {
+		if strings.HasPrefix(arch, a) {
+			return true
+		}
+	}
+	return false
+}
+
 func create(ctx *context.Context, fpm config.NFPM, format string, binaries []*artifact.Artifact) error {
 	// TODO: improve mips handling on nfpm
 	infoArch := binaries[0].Goarch + binaries[0].Goarm + binaries[0].Gomips // key used for the ConventionalFileName et al
 	arch := infoArch + binaries[0].Goamd64                                  // unique arch key
 
+	bindDir := fpm.Bindir
+	if format == termuxFormat {
+		if !isSupportedTermuxArch(arch) {
+			log.Debugf("skipping termux.deb for %s as its not supported by termux", arch)
+			return nil
+		}
+
+		replacer := strings.NewReplacer(
+			"386", "i686",
+			"amd64", "x86_64",
+			"arm64", "aarch64",
+		)
+		infoArch = replacer.Replace(infoArch)
+		arch = replacer.Replace(arch)
+		bindDir = filepath.Join("/data/data/com.termux/files", bindDir)
+	}
+
 	overridden, err := mergeOverrides(fpm, format)
 	if err != nil {
 		return err
@@ -138,7 +166,7 @@ func create(ctx *context.Context, fpm config.NFPM, format string, binaries []*ar
 			"PackageName": fpm.PackageName,
 		})
 
-	binDir, err := t.Apply(fpm.Bindir)
+	binDir, err := t.Apply(bindDir)
 	if err != nil {
 		return err
 	}
@@ -326,7 +354,7 @@ func create(ctx *context.Context, fpm config.NFPM, format string, binaries []*ar
 		info.Deb.Signature = nfpm.DebSignature{}
 	}
 
-	packager, err := nfpm.Get(format)
+	packager, err := nfpm.Get(strings.Replace(format, "termux.", "", 1))
 	if err != nil {
 		return err
 	}

internal/pipe/nfpm/nfpm_test.go

@@ -92,7 +92,7 @@ func TestRunPipe(t *testing.T) {
 				ID:          "someid",
 				Bindir:      "/usr/bin",
 				Builds:      []string{"default"},
-				Formats:     []string{"deb", "rpm", "apk"},
+				Formats:     []string{"deb", "rpm", "apk", "termux.deb"},
 				Section:     "somesection",
 				Priority:    "standard",
 				Description: "Some description with {{ .Env.DESC }}",
@@ -220,7 +220,7 @@ func TestRunPipe(t *testing.T) {
 	}
 	require.NoError(t, Pipe{}.Run(ctx))
 	packages := ctx.Artifacts.Filter(artifact.ByType(artifact.LinuxPackage)).List()
-	require.Len(t, packages, 30)
+	require.Len(t, packages, 36)
 	for _, pkg := range packages {
 		format := pkg.Format()
 		require.NotEmpty(t, format)
@@ -245,6 +245,12 @@ func TestRunPipe(t *testing.T) {
 			"./testdata/testfile-" + pkg.Goarch + pkg.Goamd64 + pkg.Goarm + pkg.Gomips + ".txt",
 			binPath,
 		}, sources(artifact.ExtraOr(*pkg, extraFiles, files.Contents{})))
+
+		bin := "/usr/bin/subdir/"
+		if format == termuxFormat {
+			bin = filepath.Join("/data/data/com.termux/files", bin)
+		}
+		bin = filepath.Join(bin, "mybin")
 		require.ElementsMatch(t, []string{
 			"/var/log/foobar",
 			"/usr/share/testfile.txt",
@@ -254,7 +260,7 @@ func TestRunPipe(t *testing.T) {
 			"/etc/nope2.conf",
 			"/etc/nope3_mybin.conf",
 			"/etc/folder",
-			"/usr/bin/subdir/mybin",
+			bin,
 		}, destinations(artifact.ExtraOr(*pkg, extraFiles, files.Contents{})))
 	}
 	require.Len(t, ctx.Config.NFPMs[0].Contents, 8, "should not modify the config file list")

www/docs/customization/nfpm.md

@@ -66,6 +66,7 @@ nfpms:
       - apk
       - deb
       - rpm
+      - termux.deb
 
     # Packages your package depends on. (overridable)
     dependencies:
@@ -378,3 +379,10 @@ nfpms:
 
 !!! info
     Fields marked with "overridable" can be overriden for any format.
+
+## A note about Termux
+
+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
+