Commit graph

84 commits

Author SHA1 Message Date
Théophane Hufschmitt 390269ed87 Simplify the handling of the hash modulo
Rather than having four different but very similar types of hashes, make
only one, with a tag indicating whether it corresponds to a regular of
deferred derivation.

This implies a slight logical change: The original Nix+multiple-outputs
model assumed only one hash-modulo per derivation. Adding
multiple-outputs CA derivations changed this as these have one
hash-modulo per output. This change is now treating each derivation as
having one hash modulo per output.
This obviously means that we internally loose the guaranty that
all the outputs of input-addressed derivations have the same hash
modulo. But it turns out that it doesn’t matter because there’s nothing
in the code taking advantage of that fact (and it probably shouldn’t
anyways).

The upside is that it is now much easier to work with these hashes, and
we can get rid of a lot of useless `std::visit{ overloaded`.

Co-authored-by: John Ericson <John.Ericson@Obsidian.Systems>
2022-03-29 18:17:35 +02:00
John Ericson 8496be7def Use Deferred when building an input-addressed drv
Easier than using dummy path with input addressed.
2022-03-18 14:59:56 +00:00
John Ericson 197feed51d Clean up DerivationOutput, and headers
1. `DerivationOutput` now as the `std::variant` as a base class. And the
   variants are given hierarchical names under `DerivationOutput`.

   In 8e0d0689be @matthewbauer and I
   didn't know a better idiom, and so we made it a field. But this sort
   of "newtype" is anoying for literals downstream.

   Since then we leaned the base class, inherit the constructors trick,
   e.g. used in `DerivedPath`. Switching to use that makes this more
   ergonomic, and consistent.

2. `store-api.hh` and `derivations.hh` are now independent.

   In bcde5456cc I swapped the dependency,
   but I now know it is better to just keep on using incomplete types as
   much as possible for faster compilation and good separation of
   concerns.
2022-03-17 22:35:53 +00:00
John Ericson 0948b8e94d Reduce variants for derivation hash modulo
This changes was taken from dynamic derivation (#4628). It` somewhat
undoes the refactors I first did for floating CA derivations, as the
benefit of hindsight + requirements of dynamic derivations made me
reconsider some things.

They aren't to consequential, but I figured they might be good to land
first, before the more profound changes @thufschmitt has in the works.
2022-03-11 21:20:37 +00:00
Eelco Dolstra 54888b92de Move installables-related operations 2022-03-02 19:19:51 +01:00
Eelco Dolstra 162fbe31ff Replace defaultBla.$system with bla.$system.default
This also simplifies some InstallableFlake logic and fixes 'nix
bundle' parsing its installable twice.

Fixes #5532.
2022-02-22 11:47:41 +01:00
Eelco Dolstra 023e459777 InstallableFlake: Default attr paths cleanup
This removes some duplicated logic, and fixes "nix bundle" parsing its
installable twice.
2022-02-14 21:06:11 +01:00
pennae 0d7fae6a57 convert a for more utilities to string_view 2022-01-27 17:15:43 +01:00
Eelco Dolstra 9747ea84b4 Remove CPU locking
This was already accidentally disabled in ba87b08. It also no longer
appears to be beneficial, and in fact slow things down, e.g. when
evaluating a NixOS system configuration:

  elapsed time:       median =      3.8170  mean =      3.8202  stddev =      0.0195  min =      3.7894  max =      3.8600  [rejected, p=0.00000, Δ=0.36929±0.02513]
2021-12-22 15:56:25 +01:00
regnat af99941279 Make experimental-features a proper type
Rather than having them plain strings scattered through the whole
codebase, create an enum containing all the known experimental features.

This means that
- Nix can now `warn` when an unkwown experimental feature is passed
  (making it much nicer to spot typos and spot deprecated features)
- It’s now easy to remove a feature altogether (once the feature isn’t
  experimental anymore or is dropped) by just removing the field for the
  enum and letting the compiler point us to all the now invalid usages
  of it.
2021-10-26 07:02:31 +02:00
Artturin e399c6ab7f nix develop: add --unpack 2021-10-09 01:19:50 +03:00
Eelco Dolstra b71428c907 Merge branch 'fix-3976' of https://github.com/mkenigs/nix 2021-09-08 14:43:12 +02:00
Jan Tojnar d7b6c8f591 nix develop: Fix devShells lookup
It currently fails with the following error:

    error: flake 'git+file://…' does not provide attribute 'devShells.x86_64-linuxhaskell', 'packages.x86_64-linux.haskell', 'legacyPackages.x86_64-linux.haskell' or 'haskell'
2021-08-21 01:24:28 +02:00
Matthew Kenigsberg d7fe36116e
nix develop --phase: chdir to flake directory
For git+file and path flakes, chdir to flake directory so that phases
that expect to be in the flake directory can run

Fixes https://github.com/NixOS/nix/issues/3976
2021-08-19 15:42:13 -05:00
Eelco Dolstra ed5ad59dc1 nix develop: Support chroot stores
Fixes #5024.
2021-07-27 14:24:03 +02:00
Eelco Dolstra eb6db4fd38 buildPaths(): Add an evalStore argument
With this, we don't have to copy the entire .drv closure to the
destination store ahead of time (or at all). Instead, buildPaths()
reads .drv files from the eval store and copies inputSrcs to the
destination store if it needs to build a derivation.

Issue #5025.
2021-07-22 09:59:51 +02:00
Eelco Dolstra 8d9f7048cd Use eval-store in more places
In particular, this now works:

  $ nix path-info --eval-store auto --store https://cache.nixos.org nixpkgs#hello

Previously this would fail as it would try to upload the hello .drv to
cache.nixos.org. Now the .drv is instantiated in the local store, and
then we check for the existence of the outputs in cache.nixos.org.
2021-07-22 09:59:51 +02:00
regnat 037c86ee04 nix develop: Search in devShells.${system} by default
Make `nix develop .#foo` search `.#devShells.${system}.foo` first
2021-07-13 17:25:27 +02:00
Maximilian Bosch 04cd2da84c
Merge branch 'master' into structured-attrs-shell
Conflicts:
        src/nix/develop.cc
        src/nix/get-env.sh
        tests/shell.nix
2021-07-12 15:49:39 +02:00
Eelco Dolstra 86fb01c4be nix print-dev-env: Add --json flag 2021-07-09 12:10:48 +02:00
Eelco Dolstra 5f6375a816 nix develop: Filter some bash magic variables 2021-07-09 01:18:44 +02:00
Eelco Dolstra b1f1347ade nix develop: Don't parse bash environment with regexes
Instead have get-env.sh dump the bash environment as JSON. This should
be a lot less error-prone.

Fixes #4992.
2021-07-09 01:18:37 +02:00
Michael Fellinger 087c5f5325
Fix devShell handling of env values including @ and % 2021-07-05 12:05:06 +02:00
regnat bf7960a4ed develop: Discard the input{Overrides,Updates} when getting bash
`nix develop` is getting bash from an (assumed existing) `nixpkgs`
flake. However, when doing so, it reuses the `lockFlags` passed to the
current flake, including the `--input-overrides` and `--input-update`
which generally don’t make sense anymore at that point (and trigger a
warning because of that)

Clear these overrides before getting the nixpkgs flake to get rid of the
warning.
2021-06-29 10:13:42 +02:00
Eelco Dolstra f9f773b332
Merge pull request #4908 from NixOS/ca/fix-nix-develop
Make `nix develop` work with CA derivations
2021-06-23 11:27:58 +02:00
Maximilian Bosch 3504c811a5
Add testcase for nix develop with __structuredAttrs 2021-06-22 19:15:57 +02:00
Maximilian Bosch 447928bdb5
Fix usage of structured attrs for nix develop 2021-06-22 19:15:57 +02:00
Théophane Hufschmitt ce674cb2cf
Properly set the output env variables
Co-authored-by: John Ericson <git@JohnEricson.me>
2021-06-21 15:52:01 +02:00
Eelco Dolstra e6150de90d
nix develop: Filter out NIX_REMOTE
When recursive Nix is enabled, NIX_REMOTE is set to
unix:///build/.nix-socket, which doesn't work outside of the sandbox.
2021-06-15 12:06:01 +02:00
regnat 2cf591a134 Make nix develop work with CA derivations
Fix #4823
2021-06-11 13:35:13 +02:00
Matthew Bauer 5fd8cf7667 Source bashrc first in nix develop
~/.bashrc should be sourced first in the rc script so that PATH &
other env vars give precedence over the bashrc PATH.

Also, in my bashrc I alias rm as:

  alias rm='rm -Iv'

To avoid running this alias (which shows ‘removed '/tmp/nix-shell.*'),
we can just prefix rm with command.
2021-05-17 15:07:00 -05:00
regnat 2105084645 Enfore the use of properly built paths in libcmd
Replace `DerivedPathWithHints` by a new `BuiltPath` type that serves as
a proof that the corresponding path has been built.
2021-05-17 08:45:08 +02:00
regnat ec613603ba DerivedPathWithHints -> BuiltPath
Just a renaming for now
2021-05-12 16:19:51 +02:00
Eelco Dolstra 9b9e703df4 restoreSignals() + restoreAffinity() -> restoreProcessContext() 2021-04-07 13:10:02 +02:00
John Ericson 179582872d Make DerivedPathWithHints a newtype
This allows us to namespace its constructors under it.
2021-04-05 10:05:21 -04:00
John Ericson 9b805d36ac Rename Buildable 2021-04-05 09:52:25 -04:00
John Ericson 255d145ba7 Use BuildableReq for buildPaths and ensurePath
This avoids an ambiguity where the `StorePathWithOutputs { drvPath, {}
}` could mean "build `brvPath`" or "substitute `drvPath`" depending on
context.

It also brings the internals closer in line to the new CLI, by
generalizing the `Buildable` type is used there and makes that
distinction already.

In doing so, relegate `StorePathWithOutputs` to being a type just for
backwards compatibility (CLI and RPC).
2021-04-05 08:33:00 -04:00
Eelco Dolstra 13897afbe6 Throw an error if --arg / --argstr is used with a flake
Fixes #3949.
2021-02-17 17:32:10 +01:00
Eelco Dolstra 063de66909 nix develop: Fix quoted string handling
Fixes #4540.
2021-02-17 16:42:03 +01:00
James Ottaway 991edaace5
Shorten mktemp flag for macOS
Address `mktemp: illegal option -- -`.
2021-01-29 13:55:18 +10:00
Eelco Dolstra 3da9a9241c Convert option descriptions to Markdown 2021-01-13 14:18:04 +01:00
Eelco Dolstra 42cc98f8d6
Add 'nix develop' and `nix print-dev-env' manpages 2020-12-21 13:32:27 +01:00
Sebastian Ullrich fb7735e4cf nix develop: Preserve stdin with -c 2020-11-09 22:43:14 +01:00
Eelco Dolstra dc7d1322ef Make the prompt used in development shells configurable 2020-10-26 14:24:25 +01:00
Eelco Dolstra 750ce500c2 Fix clang build 2020-10-22 13:40:30 +02:00
Eelco Dolstra f9438fb64a nix develop: Add --redirect flag to redirect dependencies
This is primarily useful if you're hacking simultaneously on a package
and one of its dependencies. E.g. if you're hacking on Hydra and Nix,
you would start a dev shell for Nix, and then a dev shell for Hydra as
follows:

  $ nix develop \
    --redirect .#hydraJobs.build.x86_64-linux.nix ~/Dev/nix/outputs/out \
    --redirect .#hydraJobs.build.x86_64-linux.nix.dev ~/Dev/nix/outputs/dev

(This assumes hydraJobs.build.x86_64-linux has a passthru.nix
attribute. You can also use a store path.)

This causes all references in the environment to those store paths to
be rewritten to ~/Dev/nix/outputs/{out,dev}. Note: unfortunately, you
may need to set LD_LIBRARY_PATH=~/Dev/nix/outputs/out/lib because
Nixpkgs' ld-wrapper only adds -rpath entries for -L flags that point
to the Nix store.
2020-10-22 13:40:30 +02:00
Eelco Dolstra e556a1beb7 nix develop: Handle 'declare -ax' in bash output
Fixes 'nix develop nixpkgs#qpdfview'.
2020-10-21 17:54:21 +02:00
Matthew Kenigsberg f6aaac2b59 Make bash non-interactive for nix develop --phase
Fix #3975: Currently if Ctrl-C is pressed during a phase, the interactive subshell
is not exited. Removing --rcfile when --phase is present makes bash
non-interactive
2020-10-20 12:00:30 -05:00
Eelco Dolstra 725488b892 nix develop: Unset $HOSTNAME
This is set to "localhost" by stdenv which is probably not what you
want.
2020-10-09 22:03:18 +02:00
Eelco Dolstra 44349064f7 nix develop: Source ~/.bashrc
Fixes #4104.
2020-10-09 22:02:00 +02:00