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Clarify docs on deleting generations, including fixing a mistake
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hacking guide: use more self-descriptive section headings
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Deleting store info corrected (there is a foot-gun in Nix with
`--delete-generations old`!)
Also a few things are cleaned up based on feedback.
Co-authored-by: Valentin Gagarin <valentin.gagarin@tweag.io>
Co-authored-by: Eelco Dolstra <edolstra@gmail.com>
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Split `OptionalPathSetting` from `PathSetting`
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Co-authored-by: Robert Hensing <roberth@users.noreply.github.com>
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split nix.conf man page into sections
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GC server: Clear O_NONBLOCK on the right file descriptor
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this makes it easier to scan for specific information, such as the
format of command line flags
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redirect old platform uninstall instruction links
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Previously it was not possible to open a local store when its database is on a read-only filesystem. Obviously a store on a read-only filesystem cannot be modified, but it would still be useful to be able to query it.
This change adds a new read-only setting to LocalStore. When set to true, Nix will skip operations that fail when the database is on a read-only filesystem (acquiring big-lock, schema migration, etc), and the store database will be opened in immutable mode.
Co-authored-by: Ben Radford <benradf@users.noreply.github.com>
Co-authored-by: cidkidnix <cidkidnix@protonmail.com>
Co-authored-by: Dylan Green <67574902+cidkidnix@users.noreply.github.com>
Co-authored-by: John Ericson <git@JohnEricson.me>
Co-authored-by: Valentin Gagarin <valentin.gagarin@tweag.io>
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The bug fix in 6d30f9e6fea7d451033653f8f167aef58f7f5347 erroneously
cleared O_NONBLOCK on the server rather than client FD (leaving both
in an incorrect state).
Fixes #8551.
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Uninstall instructions were moved to their own page in #8267. The
overall section link was redirected in #8286, but platform-specific
links (which I give out frequently when I triage installer trouble)
weren't included.
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* Add more links in nix-build documentation
Co-authored-by: John Ericson <git@JohnEricson.me>
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Make a few changes in prepartion for deeper cleanup of the remote protocols
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These were never needed for this file, and date back to before this was
split from `derivation-goal.cc`.
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Pass this around instead of `Source &` and `Sink &` directly. This will
give us something to put the protocol version on once the time comes.
To do this ergonomically, we need to expose `RemoteStore::Connection`,
so do that too. Give it some more API docs while we are at it.
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The motivation is exactly the same as for the last commit. In addition,
this anticipates us formally defining separate serialisers for the serve
protocol.
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See API docs on that struct for why. The pasing as as template argument
doesn't yet happen in that commit, but will instead happen in later
commit.
Also make `WorkerOp` (now `Op`) and enum struct. This led us to catch
that two operations were not handled!
Co-authored-by: Robert Hensing <roberth@users.noreply.github.com>
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This is generally a fine practice: Putting implementations in headers
makes them harder to read and slows compilation. Unfortunately it is
necessary for templates, but we can ameliorate that by putting them in a
separate header. Only files which need to instantiate those templates
will need to include the header with the implementation; the rest can
just include the declaration.
This is now documenting in the contributing guide.
Also, it just happens that these polymorphic serializers are the
protocol agnostic ones. (Worker and serve protocol have the same logic
for these container types.) This means by doing this general template
cleanup, we are also getting a head start on better indicating which
code is protocol-specific and which code is shared between protocols.
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restoreMountNamespace(): Restore the original root directory
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maintainers: add note on marking PRs as draft
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CONTRIBUTING.md: add link to "good first issues"
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as discussed with maintainers team
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src/libexpr/eval.hh: add link for allowed-uris option
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- Greatly expand API docs
- Clean up code in misc ways
- Instead of a complicated single loop on generations, do different
operations in successive subsequent steps.
- Avoid `ref` in one place where `&` is fine
- Just return path instead of mutating an argument in `makeName`
Co-authored-by: Valentin Gagarin <valentin.gagarin@tweag.io>
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While this is not actually a notion in the implementation, it is
explicitly described in the thesis and quite important for understanding
how the store works.
Co-authored-by: John Ericson <git@JohnEricson.me>
Co-authored-by: Robert Hensing <roberth@users.noreply.github.com>
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Refine wording on the purpose of the Nix language
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This commit adds a link to the documentation for `--option
allowed-uris` where that option is mentioned while describing
`restrict-eval`.
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Rather than doing `allowEmpty` as boolean, have separate types and use
`std::optional`. This makes it harder to forget the possibility of an
empty path.
The `build-hook` setting was categorized as a `PathSetting`, but
actually it was split into arguments. No good! Now, it is
`Setting<Strings>` which actually reflects what it means and how it is
used.
Because of the subtyping, we now also have support for
`Setting<std::optional<String>>` in general. I imagine this can be used
to clean up many more settings also.
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This is somewhat tricky.
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ci: bump install-nix-action, don't fail fast
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Tarball flake improvements
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Co-authored-by: Robert Hensing <roberth@users.noreply.github.com>
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Fix build hook error for libstore library users
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Don't assume the type of string::size_type
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The code accidentally conflated `std::string::size_type` and `long unsigned int`.
This was fine on 64bits machines where they are apparently the same in
practice, but not on 32bits. Fix that by using `std::string::size_type`
everywhere.
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A library shouldn't require changes to the caller's argument handling,
especially if it doesn't have to, and indeed we don't have to.
This changes the lookup order to prioritize the hardcoded path to nix
if it exists. The static executable still finds itself through /proc
and the like.
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build: show UID and GID in welcome message
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src/libexpr/eval.hh: fix typo
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Co-authored-by: John Ericson <git@JohnEricson.me>
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