1 We think that operating systems are very exciting to work on; In particular,
2 we enjoy working with descendants of OpenSolaris. Unfortunately, we feel
3 that the major OpenSolaris fork - illumos - has adopted a contribution
4 process that hinders development and discourages new contributors from
5 coming back with more code changes. Therefore, we created this fork to try
6 to address these issues.
11 While the full list of goals is constantly evolving, the following is a list
12 of the basic goals which we always strive for.
14 1. The contribution process must be simple and must encourage new
15 contributors to repeatedly contribute.
16 2. We aim to have periodic releases (roughly one every 6 months). Security
17 patches will be provided between releases.
18 3. Unleashed aims to be a modern operating system base.
19 1. Modern compiler support. Currently, the base system can only be built
20 with gcc 4.4.4, however we hope to allow a wider range of gcc versions.
21 Eventually, we would like to be able to use clang as well.
22 2. The UNIX environment has changed drastically over the past 20 years.
23 As a result, we hope to ship an environment that provides the comforts
24 of modern UNIX, yet maintains the unique features we inherited that set
25 us apart from other UNIX systems out there.
26 3. POSIX has won. Therefore, when it does not hinder usability (see item
27 3.2), we want a system that is POSIX compliant without having to jump
28 through special hoops (e.g., setting $PATH, or providing extra compiler
30 4. We do *not* support "extreme legacy". While support for legacy
31 interfaces and binaries is important, it must be done in moderation.
32 Therefore, old interfaces may be removed from time to time. Interface
33 deprecation will be clearly communicated through release notes.
34 4. Maintaining code is hard enough when the code is squeaky clean. To make
35 our job easier, we try to get the code clean when first committing it -
36 even if it delays the commit a little bit. In other words, we care about
37 more than just that the code works - we want code we can (for the most
43 We believe that our community members can behave responsibly both when
44 communicating with others as well as when committing code to the repository.
45 To help guide newcomers, we have created a Code of Conduct (see
46 docs/code-of-conduct.md) that we expect everyone to abide by. The community
47 organization is described in docs/organization.md.
52 Commits are cheap. Modern revision control systems (e.g., git) handle large
53 numbers of commits very well. Therefore small changes are encouraged
54 (instead of "mega commits" that seem to touch half the code base). Smaller
55 commits make it easier to search through commit history to see what other
56 parts of the repository were changed as part of the change. Additionally,
57 small changes are easier to review.
59 Each commit should build and boot. Obviously, running nightly and a full
60 set of tests for each commit is not necessarily practical, however one
61 should try to avoid commits that break the build. (Commits that don't build
62 or boot make it harder to bisect the history to find bad commits.)
64 For the most part, we use a Linux kernel-style commit messages. If there is
65 a bug number reference it. For example:
67 subsys: frob the input 7 times
69 frobbing less than 7 times leads to information disclosure
74 Spelling of comments fixed up by: Committer Developer <c.d@example.com>