Commit graph

70 commits

Author SHA1 Message Date
Eelco Dolstra 488a826842
Merge pull request #4467 from edolstra/error-formatting
Improve error formatting
2021-01-25 12:50:57 +01:00
John Ericson 53a709535b Apply suggestions from code review
Thanks!

Co-authored-by: Eelco Dolstra <edolstra@gmail.com>
2021-01-22 15:58:58 +00:00
Eelco Dolstra 8d4268d190 Improve error formatting
Changes:

* The divider lines are gone. These were in practice a bit confusing,
  in particular with --show-trace or --keep-going, since then there
  were multiple lines, suggesting a start/end which wasn't the case.

* Instead, multi-line error messages are now indented to align with
  the prefix (e.g. "error: ").

* The 'description' field is gone since we weren't really using it.

* 'hint' is renamed to 'msg' since it really wasn't a hint.

* The error is now printed *before* the location info.

* The 'name' field is no longer printed since most of the time it
  wasn't very useful since it was just the name of the exception (like
  EvalError). Ideally in the future this would be a unique, easily
  googleable error ID (like rustc).

* "trace:" is now just "…". This assumes error contexts start with
  something like "while doing X".

Example before:

  error: --- AssertionError ---------------------------------------------------------------------------------------- nix
  at: (7:7) in file: /home/eelco/Dev/nixpkgs/pkgs/applications/misc/hello/default.nix

       6|
       7|   x = assert false; 1;
        |       ^
       8|

  assertion 'false' failed
  ----------------------------------------------------- show-trace -----------------------------------------------------
  trace: while evaluating the attribute 'x' of the derivation 'hello-2.10'
  at: (192:11) in file: /home/eelco/Dev/nixpkgs/pkgs/stdenv/generic/make-derivation.nix

     191|         // (lib.optionalAttrs (!(attrs ? name) && attrs ? pname && attrs ? version)) {
     192|           name = "${attrs.pname}-${attrs.version}";
        |           ^
     193|         } // (lib.optionalAttrs (stdenv.hostPlatform != stdenv.buildPlatform && !dontAddHostSuffix && (attrs ? name || (attrs ? pname && attrs ? version)))) {

Example after:

  error: assertion 'false' failed

         at: (7:7) in file: /home/eelco/Dev/nixpkgs/pkgs/applications/misc/hello/default.nix

              6|
              7|   x = assert false; 1;
               |       ^
              8|

         … while evaluating the attribute 'x' of the derivation 'hello-2.10'

         at: (192:11) in file: /home/eelco/Dev/nixpkgs/pkgs/stdenv/generic/make-derivation.nix

            191|         // (lib.optionalAttrs (!(attrs ? name) && attrs ? pname && attrs ? version)) {
            192|           name = "${attrs.pname}-${attrs.version}";
               |           ^
            193|         } // (lib.optionalAttrs (stdenv.hostPlatform != stdenv.buildPlatform && !dontAddHostSuffix && (attrs ? name || (attrs ? pname && attrs ? version)))) {
2021-01-21 11:02:09 +01:00
John Ericson 7af743470c Make public keys and requireSigs local-store specific again
Thanks @regnat and @edolstra for catching this and comming up with the
solution.

They way I had generalized those is wrong, because local settings for
non-local stores is confusing default. And due to the nature of C++
inheritance, fixing the defaults is more annoying than it should be.
Additionally, I thought we might just drop the check in the substitution
logic since `Store::addToStore` is now streaming, but @regnat rightfully
pointed out that as it downloads dependencies first, that would still be
too late, and also waste effort on possibly unneeded/unwanted
dependencies.

The simple and correct thing to do is just make a store method for the
boolean logic, keeping all the setting and key stuff the way it was
before. That new method is both used by `LocalStore::addToStore` and the
substitution goal check. Perhaps we might eventually make it fancier,
e.g. sending the ValidPathInfo to remote stores for them to validate,
but this is good enough for now.
2021-01-15 16:37:41 +00:00
John Ericson 0027b05a15 Merge remote-tracking branch 'upstream/master' into non-local-store-build 2021-01-15 02:01:24 +00:00
Eelco Dolstra 4e9cec79bf
Merge pull request #4444 from matthewbauer/unset-curproc-arch-affinity
Set kern.curproc_arch_affinity=0 to escape Rosetta
2021-01-13 12:16:53 +01:00
Rickard Nilsson 0ca1a50132 Remove a redundant condition in DerivationGoal::tryLocalBuild() 2021-01-13 10:13:51 +01:00
Matthew Bauer f69820417f Set kern.curproc_arch_affinity=0 to escape Rosetta
By default, once you enter x86_64 Rosetta 2, macOS will try to run
everything in x86_64. So an x86_64 Nix will still try to use x86_64
even when system = aarch64-darwin. To avoid this we can set
kern.curproc_arch_affinity sysctl. With kern.curproc_arch_affinity=0,
we ignore this preference.

This is based on how
https://opensource.apple.com/source/system_cmds/system_cmds-880.40.5/arch.tproj/arch.c.auto.html
works. Completely undocumented, but seems to work!

Note, you can verify this works with this impure Nix expression:

```
  {
    a = derivation {
      name = "a";
      system = "aarch64-darwin";
      builder = "/bin/sh";
      args = [ "-e" (builtins.toFile "builder" ''
        [ "$(/usr/bin/arch)" = arm64 ]
        [ "$(/usr/bin/arch -arch x86_64 /bin/sh -c /usr/bin/arch)" = i386 ]
        [ "$(/usr/bin/arch -arch arm64 /bin/sh -c /usr/bin/arch)" = arm64 ]
        /usr/bin/touch $out
      '') ];
    };

    b = derivation {
      name = "b";
      system = "x86_64-darwin";
      builder = "/bin/sh";
      args = [ "-e" (builtins.toFile "builder" ''
        [ "$(/usr/bin/arch)" = i386 ]
        [ "$(/usr/bin/arch -arch x86_64 /bin/sh -c /usr/bin/arch)" = i386 ]
        [ "$(/usr/bin/arch -arch arm64 /bin/sh -c /usr/bin/arch)" = arm64 ]
        /usr/bin/touch $out
      '') ];
    };
  }
```
2021-01-11 22:40:21 -06:00
Eelco Dolstra 6548b89cc4 string2Int(): Return std::optional 2021-01-08 12:22:21 +01:00
Eelco Dolstra 3edcb198e5
Merge pull request #4310 from matthewbauer/rosetta2-extra-platforms
Add x86_64-darwin and aarch64 to "extra-platforms" automatically when Rosetta2 is detected
2021-01-06 11:31:13 +01:00
John Ericson fed1237246 Test nix-build with non-local-store --store
Just a few small things needed fixing!
2020-12-23 22:42:06 +00:00
John Ericson 85f2e9e8fa Expose schedule entrypoints to all stores
Remote stores still override so the other end schedules.
2020-12-23 22:42:06 +00:00
John Ericson 450c3500f1 Crudely make worker only provide a Store, not LocalStore
We downcast in a few places, this will be refactored to be better later.
2020-12-23 22:42:06 +00:00
John Ericson 1a1af75338 Overhaul store subclassing
We embrace virtual the rest of the way, and get rid of the
`assert(false)` 0-param constructors.

We also list config base classes first, so the constructor order is
always:

  1. all the configs
  2. all the stores

Each in the same order
2020-12-20 15:47:14 +00:00
regnat e9b39f6004 Restrict the operations on drv outputs in recursive Nix
There's currently no way to properly filter them, so disallow them
altogether instead.
2020-12-11 21:17:25 +01:00
regnat bab1cda0e6 Use the hash modulo in the derivation outputs
Rather than storing the derivation outputs as `drvPath!outputName` internally,
store them as `drvHashModulo!outputName` (or `outputHash!outputName` for
fixed-output derivations).

This makes the storage slightly more opaque, but enables an earlier
cutoff in cases where a fixed-output dependency changes (but keeps the
same output hash) − same as what we already do for input-addressed
derivations.
2020-12-11 21:17:23 +01:00
regnat 3ac9d74eb1 Rework the db schema for derivation outputs
Add a new table for tracking the derivation output mappings.

We used to hijack the `DerivationOutputs` table for that, but (despite its
name), it isn't a really good fit:

- Its entries depend on the drv being a valid path, making it play badly with
  garbage collection and preventing us to copy a drv output without copying
  the whole drv closure too;
- It dosen't guaranty that the output path exists;

By using a different table, we can experiment with a different schema better
suited for tracking the output mappings of CA derivations.
(incidentally, this also fixes #4138)
2020-12-11 20:41:32 +01:00
regnat 58cdab64ac Store metadata about drv outputs realisations
For each known realisation, store:
- its output
- its output path

This comes with a set of needed changes:

- New `realisations` module declaring the types needed for describing
  these mappings
- New `Store::registerDrvOutput` method registering all the needed informations
  about a derivation output (also replaces `LocalStore::linkDeriverToPath`)
- new `Store::queryRealisation` method to retrieve the informations for a
  derivations

This introcudes some redundancy on the remote-store side between
`wopQueryDerivationOutputMap` and `wopQueryRealisation`.
However we might need to keep both (regardless of backwards compat)
because we sometimes need to get some infos for all the outputs of a
derivation (where `wopQueryDerivationOutputMap` is handy), but all the
stores can't implement it − because listing all the outputs of a
derivation isn't really possible for binary caches where the server
doesn't allow to list a directory.
2020-12-11 20:41:32 +01:00
regnat c87267c2a4 Store the final drv outputs in memory when building remotely
The `DerivationGoal` has a variable storing the “final” derivation
output paths that is used (amongst other things) to fill the environment
for the post build hook. However this variable wasn't set when the
build-hook is used, causing a crash when both hooks are used together.

Fix this by setting this variable (from the informations in the db) after a run
of the post build hook.
2020-12-09 10:45:12 +01:00
regnat 6758e65612 Revert "Re-query for the derivation outputs in the post-build-hook"
This reverts commit 1b1e076033.

Using `queryPartialDerivationOutputMap` assumes that the derivation
exists locally which isn't the case for remote builders.
2020-12-09 09:44:07 +01:00
regnat 1b1e076033 Re-query for the derivation outputs in the post-build-hook
We can't assume that the runtime state knows about them as they might have
been built remotely, in which case we must query the db again to get
them.
2020-12-08 11:11:02 +01:00
Matthew Bauer 4b9acf4e21 Use posix_spawn_setbinpref_np to advise which architecture to run
When running universal binaries like /bin/bash, Darwin XNU will choose
which architecture of the binary to use based on "binary preferences".
This change sets that to the current platform for aarch64 and x86_64
builds. In addition it now uses posix_spawn instead of the usual
execve. Note, that this does not prevent the other architecture from
being run, just advises which to use.

Unfortunately, posix_spawnattr_setbinpref_np does not appear to be
inherited by child processes in x86_64 Rosetta 2 translations, meaning
that this will not always work as expected.

For example:

  {
    arm = derivation {
      name = "test";
      system = "aarch64-darwin";
      builder = "/bin/bash";
      args = [ "-e" (builtins.toFile "test" ''
        set -x
        /usr/sbin/sysctl sysctl.proc_translated
        /usr/sbin/sysctl sysctl.proc_native
        [ "$(/usr/bin/arch)" = arm64 ]
        /usr/bin/touch $out
      '') ];
    };
    rosetta = derivation {
      name = "test";
      system = "x86_64-darwin";
      builder = "/bin/bash";
      args = [ "-e" (builtins.toFile "test" ''
        set -x
        /usr/sbin/sysctl sysctl.proc_translated
        /usr/sbin/sysctl sysctl.proc_native
        [ "$(/usr/bin/arch)" = i386 ]
        echo It works!
        /usr/bin/touch $out
      '') ];
    };
  }

`arm' fails on x86_64-compiled Nix, but `arm' and `rosetta' succeed on
aarch64-compiled Nix. I suspect there is a way to fix this since:

  $ /usr/bin/arch -arch x86_64 /bin/bash \
    -c '/usr/bin/arch -arch arm64e /bin/bash -c /usr/bin/arch'
  arm64

seems to work correctly. We may need to wait for Apple to update
system_cmds in opensource.apple.com to find out how though.
2020-12-03 15:41:59 -06:00
regnat 0afab668fa Don't fail early when -j0 is passed
If the build closure contains some CA derivations, then we can't know
ahead-of-time that we won't build anything as early-cutoff might come-in
at a laster stage
2020-12-03 13:24:36 +01:00
Eelco Dolstra faa31f4084 Sink: Use std::string_view 2020-12-02 14:17:27 +01:00
Eelco Dolstra e5cf501c77
Merge pull request #4284 from tweag/fixed-output-depending-on-ca
Allow fixed-output derivations to depend on (floating) content-addressed ones
2020-12-01 20:25:41 +01:00
regnat 438977731c shut up clang warnings
- Fix some class/struct discrepancies
- Explicit the overloading of `run` in the `Cmd*` classes
- Ignore a warning in the generated lexer
2020-12-01 15:04:03 +01:00
Eelco Dolstra 3b7e00ce22 Move primeCache() to Worker::run()
We need the missing path info to communicate the worker's remaining
goals to the progress bar.
2020-12-01 13:44:48 +01:00
regnat 9bd8184f1f Allow fixed-output derivations to depend on (floating) content-addressed ones
Fix an overlook of https://github.com/NixOS/nix/pull/4056
2020-11-27 15:39:24 +01:00
regnat 13c557fe82 fix the hash rewriting for ca-derivations 2020-11-25 11:33:00 +01:00
Eelco Dolstra e8c379555f LocalStore: Get rid of recursive_mutex 2020-11-03 14:45:24 +01:00
Robert Hensing e8a45d07bc Restore RestrictedStore.addToStoreFromDump implementation
It was accidentally removed in commit ca30abb3fb
2020-10-31 23:56:03 +01:00
Eelco Dolstra ff4dea63c9 Generalize extra-* settings
This removes the extra-substituters and extra-sandbox-paths settings
and instead makes every array setting extensible by setting
"extra-<name> = <value>" in the configuration file or passing
"--<name> <value>" on the command line.
2020-10-29 18:17:39 +01:00
stev 869c0321ff Alter "wanted:" to "specified:" in hash mismatch output
This makes it even clearer which of the two hashes was specified in the
nix files. Some may think that "wanted" and "got" is obvious, but:
"got" could mean "got in nix file" and "wanted" could mean "want to see in nix file".
2020-10-29 00:33:14 +01:00
regnat c092fa4702 Allow non-CA derivations to depend on CA derivations 2020-10-27 07:29:23 +01:00
Eelco Dolstra fda835b231
Merge pull request #4143 from obsidiansystems/typed-goal-maps
Properly type the derivation and substitution goal maps
2020-10-18 18:12:21 +02:00
Robert Hensing bd9eb5c743 DerivationGoal: only retry if output closure incomplete is only problem 2020-10-18 14:26:37 +02:00
Robert Hensing 94f1e4a441 Typo 2020-10-18 14:26:37 +02:00
John Ericson 7ed46c1574 Explain that upcast_goal is still a static cast 2020-10-17 21:50:12 +00:00
John Ericson 57d0432b39 Just use auto in two places. 2020-10-17 21:47:52 +00:00
John Ericson e6f8ae56d8 tab -> space 2020-10-17 21:45:31 +00:00
John Ericson 0fefc2a439 Merge remote-tracking branch 'upstream/master' into typed-goal-maps 2020-10-14 20:49:01 +00:00
Eelco Dolstra 11882d7c7c Create /etc/passwd *after* figuring out the sandbox uid/gid
Fixes build failures like

  # nix log /nix/store/gjaa0psfcmqvw7ivggsncx9w364p3s8s-sshd.conf-validated.drv
  No user exists for uid 30012
2020-10-14 12:20:58 +02:00
John Ericson 55592b253f Add some more docs 2020-10-13 18:04:24 +00:00
John Ericson 1b8ebe92dc Merge remote-tracking branch 'obsidian/split_build_cc' into typed-goal-maps 2020-10-12 20:47:22 +00:00
John Ericson d334fd4882 Merge branches 'split_build_hh-0', 'split_build_hh-1', 'split_build_hh-2', 'split_build_hh-3' and 'split_build_hh-4' into split_build_cc 2020-10-12 17:20:12 +00:00
John Ericson 542972f029 Trim worker.hh 2020-10-12 17:16:48 +00:00
John Ericson 0e2306204a Rename to hand-hold git (worker.hh) 2020-10-12 17:16:48 +00:00
John Ericson 3ffa3546bd Trim substitution-goal.hh 2020-10-12 17:16:25 +00:00
John Ericson e77a2344d5 Rename to hand-hold git (substitution-goal.hh) 2020-10-12 17:16:25 +00:00
John Ericson d585b4c54f Trim hook-instance.hh 2020-10-12 17:16:13 +00:00