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57 lines
2.2 KiB
Markdown
57 lines
2.2 KiB
Markdown
# News {#sec-news}
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Home Manager includes a system for presenting news to the user. When
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making a change you, therefore, have the option to also include an
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associated news entry. In general, a news entry should only be added for
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truly noteworthy news. For example, a bug fix or new option does
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generally not need a news entry.
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If you do have a change worthy of a news entry then please add one in
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[`news.nix`](https://github.com/nix-community/home-manager/blob/master/modules/misc/news.nix)
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but you should follow some basic guidelines:
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- The entry timestamp should be in ISO-8601 format having \"+00:00\"
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as time zone. For example, \"2017-09-13T17:10:14+00:00\". A suitable
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timestamp can be produced by the command
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``` shell
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$ date --iso-8601=second --universal
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```
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- The entry condition should be as specific as possible. For example,
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if you are changing or deprecating a specific option then you could
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restrict the news to those users who actually use this option.
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- Wrap the news message so that it will fit in the typical terminal,
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that is, at most 80 characters wide. Ideally a bit less.
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- Unlike commit messages, news will be read without any connection to
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the Home Manager source code. It is therefore important to make the
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message understandable in isolation and to those who do not have
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knowledge of the Home Manager internals. To this end it should be
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written in more descriptive, prose like way.
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- If you refer to an option then write its full attribute path. That
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is, instead of writing
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The option 'foo' has been deprecated, please use 'bar' instead.
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it should read
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The option 'services.myservice.foo' has been deprecated, please
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use 'services.myservice.bar' instead.
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- A new module, say `foo.nix`, should always include a news entry that
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has a message along the lines of
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A new module is available: 'services.foo'.
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If the module is platform specific, e.g., a service module using
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systemd, then a condition like
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``` nix
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condition = hostPlatform.isLinux;
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```
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should be added. If you contribute a module then you don't need to
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add this entry, the merger will create an entry for you.
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