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Add a new `--log-format` cli argument to change the format of the logs.
The possible values are
- raw (the default one for old-style commands)
- bar (the default one for new-style commands)
- bar-with-logs (equivalent to `--print-build-logs`)
- internal-json (the internal machine-readable json format)
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Reduces the number of store queries it performs. Also prints a warning
if any of the selectors did not match any installed derivations.
UX Caveats:
- Will print a warning that nothing matched if a previous selector
already removed the path
- Will not do anything if no selectors were provided (no change from
before).
Fixes #3531
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(cherry picked from commit 2c692a3b144523bca68dd6de618124ba6c9bb332)
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(cherry picked from commit 0b013a54dc570395bed887369f8dd622b8ce337b)
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Most functions now take a StorePath argument rather than a Path (which
is just an alias for std::string). The StorePath constructor ensures
that the path is syntactically correct (i.e. it looks like
<store-dir>/<base32-hash>-<name>). Similarly, functions like
buildPaths() now take a StorePathWithOutputs, rather than abusing Path
by adding a '!<outputs>' suffix.
Note that the StorePath type is implemented in Rust. This involves
some hackery to allow Rust values to be used directly in C++, via a
helper type whose destructor calls the Rust type's drop()
function. The main issue is the dynamic nature of C++ move semantics:
after we have moved a Rust value, we should not call the drop function
on the original value. So when we move a value, we set the original
value to bitwise zero, and the destructor only calls drop() if the
value is not bitwise zero. This should be sufficient for most types.
Also lots of minor cleanups to the C++ API to make it more modern
(e.g. using std::optional and std::string_view in some places).
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This allows distinguishing between an empty value and no value.
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https://hydra.nixos.org/build/102803093
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These are all symlinks to 'nix' now, reducing the installed size by
about ~1.7 MiB.
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Fixes #2425.
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Implement --delete-generations + flag for keeping last N number of gens
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missing comma
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All plugins in plugin-files will be dlopened, allowing them to
statically construct instances of the various Register* types Nix
supports.
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Also, random cleanup to argument handling.
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Relevant RFC: NixOS/rfcs#4
$ ag -l | xargs sed -i -e "/\"/s/’/'/g;/\"/s/‘/'/g"
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Functions like copyClosure() had 3 bool arguments, which creates a
severe risk of mixing up arguments.
Also, implement copyClosure() using copyPaths().
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This reverts commit f78126bfd6b6c8477fcdbc09b2f98772dbe9a1e7. There
really is no need for such a massive change...
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Also, factor out JSON generation from value-to-json.{cc,hh}, and
support producing indented JSON.
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That is, unless --file is specified, the Nix search path is
synthesized into an attribute set. Thus you can say
$ nix build nixpkgs.hello
assuming $NIX_PATH contains an entry of the form "nixpkgs=...". This
is more verbose than
$ nix build hello
but is less ambiguous.
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E.g. "local?store=/tmp/store&state=/tmp/var".
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This also gets rid of --log-type, since the nested log type isn't
useful in a multi-threaded situation, and nobody cares about the
"pretty" log type.
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Implement floats
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Also, move a few free-standing functions into StoreAPI and Derivation.
Also, introduce a non-nullable smart pointer, ref<T>, which is just a
wrapper around std::shared_ptr ensuring that the pointer is never
null. (For reference-counted values, this is better than passing a
"T&", because the latter doesn't maintain the refcount. Usually, the
caller will have a shared_ptr keeping the value alive, but that's not
always the case, e.g., when passing a reference to a std::thread via
std::bind.)
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