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Author SHA1 Message Date
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 8914e01e37 Store the realisations as JSON in the binary cache
Fix 
2020-12-11 21:05:09 +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 )
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
Eelco Dolstra 9c143c411b
Merge pull request from NixOS/ca/fix-build-with-nix-command
Fix the `nix` command with CA derivations
2020-12-11 15:01:49 +01:00
regnat eb45308109 Fix the nix command with CA derivations
Prevents a crash because most `nix` subcommands assumed that derivations
know their output path, which isn't the case for CA derivations
2020-12-11 10:28:09 +01:00
Eelco Dolstra c6a1bcd0ec nix store make-content-addressable: Show rewritten path 2020-12-10 17:11:56 +01:00
Eelco Dolstra a8f533b664 Add lvlNotice log level
This is like syslog's LOG_NOTICE: "normal, but significant,
condition".
2020-12-10 16:41:24 +01:00
Eelco Dolstra 253571e4ec
Merge pull request from tweag/fix-remote-build-hook
fix remote build hook
2020-12-09 12:40:00 +01:00
Maximilian Bosch 93a8a005de
libstore/openStore: fix stores with IPv6 addresses
In `nixStable` (2.3.7 to be precise) it's possible to connect to stores
using an IPv6 address:

  nix ping-store --store ssh://root@2001:db8::1

This is also useful for `nixops(1)` where you could specify an IPv6
address in `deployment.targetHost`.

However, this behavior is broken on `nixUnstable` and fails with the
following error:

  $ nix store ping --store ssh://root@2001:db8::1
  don't know how to open Nix store 'ssh://root@2001:db8::1'

This happened because `openStore` from `libstore` uses the `parseURL`
function from `libfetchers` which expects a valid URL as defined in
RFC2732. However, this is unsupported by `ssh(1)`:

  $ nix store ping --store 'ssh://root@[2001:db8::1]'
  cannot connect to 'root@[2001:db8::1]'

This patch now allows both ways of specifying a store (`root@2001:db8::1`) and
also `root@[2001:db8::1]` since the latter one is useful to pass query
parameters to the remote store.

In order to achieve this, the following changes were made:

* The URL regex from `url-parts.hh` now allows an IPv6 address in the
  form `2001:db8::1` and also `[2001:db8::1]`.

* In `libstore`, a new function named `extractConnStr` ensures that a
  proper URL is passed to e.g. `ssh(1)`:

  * If a URL looks like either `[2001:db8::1]` or `root@[2001:db8::1]`,
    the brackets will be removed using a regex. No additional validation
    is done here as only strings parsed by `parseURL` are expected.

  * In any other case, the string will be left untouched.

* The rules above only apply for `LegacySSHStore` and `SSHStore` (a.k.a
  `ssh://` and `ssh-ng://`).

Unresolved questions:

* I'm not really sure whether we want to allow both variants of IPv6
  addresses in the URL parser. However it should be noted that both seem
  to be possible according to RFC2732:

  > This document incudes an update to the generic syntax for Uniform
  > Resource Identifiers defined in RFC 2396 [URL].  It defines a syntax
  > for IPv6 addresses and allows the use of "[" and "]" within a URI
  > explicitly for this reserved purpose.

* Currently, it's not supported to specify a port number behind the
  hostname, however it seems as this is not really supported by the URL
  parser. Hence, this is probably out of scope here.
2020-12-09 12:23:29 +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
Eelco Dolstra 82e5511594
Merge pull request from tweag/hide-local-store-sql-statements
Hide the sqlite statements declarations for the local store
2020-12-08 14:04:16 +01:00
regnat c0f21f08f8 Hide the sqlite statements declarations for the local store
These have no need to be in the public interface and it causes spurious
rebuilds each time one wants to add or remove a new statement.
2020-12-08 13:29:13 +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 aa07502009 Always default to cache.nixos.org even when different nix store dir
Since 0744f7f, it is now useful to have cache.nixos.org in substituers
even if /nix/store is not the Nix Store Dir. This can always be
overridden via configuration, though.
2020-12-06 23:04:42 -06:00
Eelco Dolstra 1d1a85eb0a
Merge pull request from matthewbauer/add-slash-to-trusted-binary-cache
Canonicalize binary caches with ‘/’ when one is missing
2020-12-05 10:17:17 +01:00
Matthew Bauer b9a00fd15b Canonicalize binary caches with ‘/’ when one is missing
This checks if there is a trusted substituter with a slash, so
trusting https://cache.nixos.org also implies https://cache.nixos.org/
is trusted.
2020-12-04 22:17:19 -06:00
Stéphan Kochen e20a3ec756 Fix compatibility with newer AWS SDKs
Tested against AWS SDK 1.8.99. Fixes .
2020-12-04 19:36:09 +01:00
Eelco Dolstra f337aa7099 Split 'nix store add-to-store' into 'add-path' and 'add-file'
This makes it consistent with 'nix hash <path|file>'.
2020-12-04 00:59:24 +01:00
Eelco Dolstra fa8dad10ed Typo 2020-12-03 23:26:23 +01:00
Eelco Dolstra ea2062a2d9 Move most store-related commands to 'nix store' 2020-12-03 23:22:22 +01:00
Eelco Dolstra a1cd805cba Add 'nix nar dump-path'
This only differs from 'nix store dump-path' in that the path doesn't
need to be a store path.
2020-12-03 22:52:01 +01:00
Eelco Dolstra af373c2ece Add deprecated aliases for renamed commands 2020-12-03 22:45:44 +01:00
Eelco Dolstra 0c15ae5d4b Add FIXME 2020-12-03 20:31:45 +01:00
Eelco Dolstra ef583303f0 Move NAR-related commands to 'nix nar' 2020-12-03 18:09:02 +01:00
Eelco Dolstra 79c1967ded Introduce 'nix store' command 2020-12-03 18:07:13 +01:00
Eelco Dolstra 5781f45c46 Allow registering subcommands of subcommands 2020-12-03 17:55:55 +01:00
Eelco Dolstra b2d6c6161e Move 'nix hash-*' and 'nix to-*' to 'nix hash'
From the 'nix' UX review.
2020-12-03 17:55:55 +01:00
Eelco Dolstra 8ad2c9c4b9 Remove 'dist' target
We're not producing source tarballs anymore so this has been
bitrotting.
2020-12-03 16:17:58 +01:00
Eelco Dolstra 1b0ca3866b nix add-to-store: Move markdown docs into a separate file 2020-12-03 16:17:58 +01:00
Eelco Dolstra c3c858ac6d Make doc() return arbitrary Markdown rather than the contents of the "Description" section
Thus we can return the examples section (and any other sections) from
doc() and don't need examples() anymore.
2020-12-03 16:17:58 +01:00
Eelco Dolstra 0bd060f23a
Merge pull request from tweag/properly-test-early-cutoff
Properly test the early cutoff for CA derivations
2020-12-03 14:45:29 +01:00
Eelco Dolstra 4f25644a13
Merge pull request from NixOS/separate-manpages
Separate manpages for 'nix' subcommands
2020-12-03 13:38:29 +01:00
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 df552a2645 nix eval: Add option to write a directory
This is useful for generating the nix manpages, but it may have other
applications (like generating configuration files without a Nix store).
2020-12-02 23:23:23 +01:00
Eelco Dolstra 148608ba6d Add 'nix help' 2020-12-02 23:23:23 +01:00
Greg Hale d8fc1bb7b0 fix tokens documentation 2020-12-02 10:15:18 -05:00
regnat 0d9e1af695 Remove an unknown pragma gcc warning 2020-12-02 14:33:20 +01:00
regnat a8a96dbaf8 Add forgotten override annotation 2020-12-02 14:23:38 +01:00
Eelco Dolstra 1b79b5b983 read(): Use char * instead of unsigned char *
This gets rid of some pointless casts.
2020-12-02 14:17:27 +01:00
Eelco Dolstra faa31f4084 Sink: Use std::string_view 2020-12-02 14:17:27 +01:00
Eelco Dolstra aa68486112 writeFull/writeFile: Use std::string_view 2020-12-02 14:17:27 +01:00
Eelco Dolstra e5cf501c77
Merge pull request 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 88798613ee replaceStrings(): Use std::string_view 2020-12-01 13:45:43 +01:00
Eelco Dolstra c0d1354b7d Macro hygiene 2020-12-01 13:45:06 +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
Eelco Dolstra 5927624473 Lower verbosity for 'Failed to find a machine' message 2020-12-01 13:43:36 +01:00
Eelco Dolstra e224c16d28 Macro hygiene 2020-12-01 13:43:33 +01:00