This is not an official Google product, it is just code that happens to be owned by Google.
tar2rpm is a tool that takes a tar and outputs an rpm. rpmpack is a golang library to create rpms. Both are written in pure go, without using rpmbuild or spec files. API documentation for rpmpack can be found in 
.
$ go get -u github.com/google/rpmpack/...This will make the tar2rpm tool available in ${GOPATH}/bin, which by default means ~/go/bin.
tar2rpm takes a tar file (from stdin or a specified filename), and outputs an rpm.
Usage: tar2rpm -name NAME -version VERSION [OPTION] [TARFILE] Read tar content from stdin, or TARFILE if present. Write rpm to stdout, or the file given by -file RPMFILE. If a filename is '-' use stdin/stdout without printing a notice. Options: -file RPMFILE write rpm to RPMFILE instead of stdout -name string the package name -release string the rpm release -version string the package version API documentation for rpmpack can be found in .
import "github.com/google/rpmpack" ... r, err := rpmpack.NewRPM(rpmpack.RPMMetaData{Name: "example", Version: "3"}) if err != nil { ... } r.AddFile(rpmpack.RPMFile{ Name: "/usr/local/hello", Body: []byte("content of the file"), }) if err := r.Write(w); err != nil { ... }There is a working example inside example_bazel
In WORKSPACE
load("@bazel_tools//tools/build_defs/repo:git.bzl", "git_repository") git_repository( name = "rpmpack", remote = "https://github.com/google/rpmpack.git", branch = "master", ) # The following will load the requirements to build rpmpack http_archive( name = "io_bazel_rules_go", sha256 = "69de5c704a05ff37862f7e0f5534d4f479418afc21806c887db544a316f3cb6b", urls = [ "https://mirror.bazel.build/github.com/bazelbuild/rules_go/releases/download/v0.27.0/rules_go-v0.27.0.tar.gz", "https://github.com/bazelbuild/rules_go/releases/download/v0.27.0/rules_go-v0.27.0.tar.gz", ], ) http_archive( name = "bazel_gazelle", sha256 = "62ca106be173579c0a167deb23358fdfe71ffa1e4cfdddf5582af26520f1c66f", urls = [ "https://mirror.bazel.build/github.com/bazelbuild/bazel-gazelle/releases/download/v0.23.0/bazel-gazelle-v0.23.0.tar.gz", "https://github.com/bazelbuild/bazel-gazelle/releases/download/v0.23.0/bazel-gazelle-v0.23.0.tar.gz", ], ) load("@io_bazel_rules_go//go:deps.bzl", "go_register_toolchains", "go_rules_dependencies") load("@bazel_gazelle//:deps.bzl", "gazelle_dependencies") go_rules_dependencies() go_register_toolchains(version = "1.16") gazelle_dependencies() load("@com_github_google_rpmpack//:deps.bzl", "rpmpack_dependencies") rpmpack_dependencies() In BUILD or BUILD.bazel
load("@bazel_tools//tools/build_defs/pkg:pkg.bzl", "pkg_tar") load("@com_github_google_rpmpack//:def.bzl", "pkg_tar2rpm") pkg_tar( name = "rpmtest-tar", srcs = [":content1.txt"], mode = "0644", ownername = "root.root", package_dir = "var/lib/rpmpack", ) pkg_tar2rpm( name = "rpmtest", data = ":rpmtest-tar", pkg_name = "rpmtest", release = "3.4", version = "1.2", prein = "echo \"This is preinst\" > /tmp/preinst.txt", ) - You put files into the rpm, so that rpm/yum will install them on a host.
- Simple.
- No
specfiles. - Does not build anything.
- Does not try to auto-detect dependencies.
- Does not try to magically deduce on which computer architecture you run.
- Does not require any rpm database or other state, and does not use the filesystem.
- Is not related to the team the builds rpmlib.
- May easily wreak havoc on rpm based systems. It is surprisingly easy to cause rpm to segfault on corrupt rpm files.
- Many features are missing.
- All of the artifacts are stored in memory, sometimes more than once.
- Less backwards compatible than
rpmbuild.
Sometimes you just want files to make it to hosts, and be managed by the package manager. rpmbuild can use a spec file, together with a specific directory layout and local database, to build/install/package your files. But you don't need all that. You want something similar to tar.
As the project progresses, we must maintain the complexity/value ratio. This includes both code complexity and interface complexity.
This is not an official Google product, it is just code that happens to be owned by Google.