Commit graph

4576 commits

Author SHA1 Message Date
Ben Burdette cdac083dc5 don't print blank lines for blank description 2020-04-24 21:40:13 -06:00
Ben Burdette d8d4844b88 all things error to error.hh 2020-04-24 14:57:51 -06:00
Ben Burdette d9632765a8 add has_value check; remove obslete friend class 2020-04-24 12:44:23 -06:00
Ben Burdette 833501f6f1 'what' string 2020-04-23 15:55:34 -06:00
Ben Burdette 3bc9155dfc a few more 'format's rremoved 2020-04-22 15:00:11 -06:00
Eelco Dolstra c9d0cf7e02
Don't include error.hh in util.hh to prevent header bloat 2020-04-22 15:29:27 +02:00
Eelco Dolstra 16e3bf4537
Merge branch 'error-format' of https://github.com/bburdette/nix 2020-04-22 15:29:10 +02:00
Eelco Dolstra 2ea4d45449
Path fetcher: Fix store path name
(cherry picked from commit c7af247bea)
2020-04-22 15:27:06 +02:00
Dustin DeWeese c0d940978a Replace select() with poll() to allow waiting on more than FD_SETSIZE fds 2020-04-21 16:21:28 -07:00
Ben Burdette e4fb9a3849 remove 'format' from Error constructor calls 2020-04-21 17:07:07 -06:00
Ben Burdette d3052197fe add ErrorInfo to BaseError 2020-04-21 13:25:41 -06:00
Ben Burdette 15e9564fd1 logEI for tunnelLogger and progressbar 2020-04-19 17:16:51 -06:00
Domen Kožar 25ed842725
Merge pull request #3502 from NixOS/more-pos
pass Pos to forceValue to improve infinite recursion error
2020-04-18 14:05:21 +02:00
Ben Burdette 4697552948 demoing other error levels than warn/error; rename line and file fields in errPos 2020-04-17 15:50:46 -06:00
Ben Burdette 3d5b1032a1 logError, logWarning; Logger functions; switch to Verbosity enum 2020-04-17 15:07:44 -06:00
Ben Burdette 12814806ef iomanip no longer needed 2020-04-16 10:48:15 -06:00
Eelco Dolstra efaffaa9d1 Use Logger::stdout()
(cherry picked from commit 8f41847394)
2020-04-16 18:14:01 +02:00
Eelco Dolstra 67a5941472 Logger: Add method for writing to stdout
Usually this just writes to stdout, but for ProgressBar, we need to
clear the current line, write the line to stdout, and then redraw the
progress bar.

(cherry picked from commit 696c026006)
2020-04-16 18:03:38 +02:00
Eelco Dolstra fcd048a526 Use RootValue 2020-04-16 18:02:59 +02:00
Ben Burdette 96262e744e switch to structs, which don't need public: 2020-04-16 09:55:38 -06:00
Eelco Dolstra 9f46f54de4 JSONSax: Use a RootValue
More #3377.
2020-04-16 17:30:18 +02:00
Eelco Dolstra 10e17eaa58 ValueMap, VectorVector: Use traceable_allocator
We want to *trace* the 'Value *' arrays, not garbage-collect them!
Otherwise the vectors/maps can end up pointing to nowhere.

Fixes #3377. Closes #3384.
2020-04-16 17:30:13 +02:00
Eelco Dolstra b3e5eea4a9 Add function to allocate a Value in traceable memory 2020-04-16 17:30:05 +02:00
Eelco Dolstra 1290411c2d fetchMercurial: Use inputFromAttrs() 2020-04-16 17:29:30 +02:00
Domen Kožar b865b5b40c
pass Pos to forceValue to improve infinite recursion error 2020-04-16 12:32:07 +02:00
Ben Burdette 057e5b6b2e move implementation to cc 2020-04-15 10:09:43 -06:00
Ben Burdette adf03b0b8e Merge branch 'initializer-style' into error-format 2020-04-15 10:06:20 -06:00
Eelco Dolstra 2f9789c2e6
Merge pull request #3492 from andir/nix-build-gc-free
SourceExprCommand: allocate the vSourceExpr via uncollectable memory
2020-04-15 13:01:04 +02:00
Eelco Dolstra a118293bd0
Merge pull request #3458 from zimbatm/nix-user-conf-dir
NIX_USER_CONF_FILES
2020-04-15 13:00:28 +02:00
Jonas Chevalier 895516cadf
add NIX_USER_CONF_FILES
Motivation: maintain project-level configuration files.

Document the whole situation a bit better so that it corresponds to the
implementation, and add NIX_USER_CONF_FILES that allows overriding
which user files Nix will load during startup.
2020-04-14 18:45:06 +02:00
Andreas Rammhold d2c371927e SourceExprCommand: allocate the vSourceExpr via uncollectable memory
Previously the memory would occasionally be collected during eval since
the GC doesn't consider the member variable as alive / doesn't scan the
region of memory where the pointer lives.

By using the traceable_allocator<T> allocator provided by Boehm GC we
can ensure the memory isn't collected. It should be properly freed when
SourceExprCommand goes out of scope.
2020-04-13 21:23:54 +02:00
Daiderd Jordan 4d9db420ff
never use /var/folders for TMPDIR on darwin
This doesn't just cause problems for nix-store --serve but also results
in certain build failures. Builds that use unix domain sockets in their
tests often fail because the /var/folders prefix already consumes more
than half of the maximum length of socket paths.

    struct sockaddr_un {
       sa_family_t sun_family;               /* AF_UNIX */
       char        sun_path[108];            /* Pathname */
    };
2020-04-12 09:57:22 +02:00
Domen Kožar ea2148f47c
Merge pull request #2688 from tollb/fix/build_check_keep_failed_sandbox_perms
Fix nix-build --check -K in sandbox w/o root
2020-04-11 20:03:17 +02:00
Domen Kožar fc144242d5
Merge pull request #3447 from DavHau/improve-tofile-error-msg
improve toFile error message when containing potential drv path
2020-04-11 13:12:11 +02:00
DavHau fc14213d2d improve toFile error message when containing potential drv path 2020-04-11 10:54:26 +00:00
Bruce Toll 8132d0a12e Fix nix-build --check -K in sandbox w/o root
Temporarily add user-write permission to build directory so that it
can be moved out of the sandbox to the store with a .check suffix.

This is necessary because the build directory has already had its
permissions set read-only, but write permission is required
to update the directory's parent link to move it out of the sandbox.

Updated the related --check "derivation may not be deterministic"
messages to consistently use the real store paths.

Added test for non-root sandbox nix-build --check -K to demonstrate
issue and help prevent regressions.
2020-04-10 16:23:10 -04:00
Domen Kožar db25a6d7bb
Merge pull request #2689 from tollb/fix/delete_tmp_dir_when_build_check_ok
Delete temporary directory on successful build
2020-04-10 09:47:57 +02:00
Bruce Toll 16a4864759 Delete temporary directory on successful build
With --check and the --keep-failed (-K) flag, the temporary directory
was being retained regardless of whether the build was successful and
reproducible.  This removes the temporary directory, as expected, on
a reproducible check build.

Added tests to verify that temporary build directories are not
retained unnecessarily, particularly when using --check with
--keep-failed.
2020-04-09 16:37:41 -04:00
Philipp Middendorf 04bedda0b6 gc.cc: Ignore hidden files in temproots 2020-04-09 17:05:29 +02:00
Domen Kožar a693a9fa4b
Attach pos to if expression errors 2020-04-09 09:45:15 +02:00
Nikola Knezevic 7867685dcd after flake rebase 2020-04-08 22:26:57 +02:00
Nikola Knezevic f5095594e7 datatransfer.{cc,hh} -> filetransfer.{cc,hh} 2020-04-08 22:26:57 +02:00
Nikola Knezevic c330109bfa DataTransfer -> FileTransfer 2020-04-08 22:26:57 +02:00
Nikola Knezevic 7848372b0f Add upload method 2020-04-08 22:26:57 +02:00
Nikola Knezevic a0c5931208 actDownload -> actDataTransfer 2020-04-08 22:26:57 +02:00
Nikola Knezevic c4c1ae0a00 DownloadError -> DataTransferError 2020-04-08 22:26:57 +02:00
Nikola Knezevic 213d124277 DownloadItem -> TransferItem 2020-04-08 22:26:57 +02:00
Nikola Knezevic cd391206e6 {get,make,new}Downloader -> DataTransfer 2020-04-08 22:26:57 +02:00
Nikola Knezevic 2df2741ec6 enqueueDownload -> enqueueDataTransfer 2020-04-08 22:26:57 +02:00
Nikola Knezevic 142ed7fe45 DownloadResult -> DataTransferResult 2020-04-08 22:26:57 +02:00
Nikola Knezevic e5cc53beec DownloadSettings -> DataTransferSettings 2020-04-08 22:26:57 +02:00
Nikola Knezevic 741e9012d3 Rename src/lib/download.* to src/lib/datatransfer.* 2020-04-08 22:26:57 +02:00
Nikola Knezevic 65ef57e0cb DownloadRequest -> DataTransferRequest 2020-04-08 22:26:57 +02:00
Eelco Dolstra 5449ff7d8a
Merge pull request #3477 from Ninlives/nix-run-using-env
`nix run` using $SHELL as default command
2020-04-08 19:35:39 +02:00
Ben Burdette 805ffe1bc9 indention 2020-04-08 11:33:46 -06:00
Ben Burdette 8c2bf15c4f format -> fmt 2020-04-08 11:17:02 -06:00
Domen Kožar bf81b31559
build.cc: improve message if home directory exists 2020-04-08 18:27:10 +02:00
Ben Burdette 555baa8fb0 comments 2020-04-08 09:56:10 -06:00
Ben Burdette 54f91923c8 return of NixCode 2020-04-08 09:48:21 -06:00
Eelco Dolstra 96f3c36709
Merge pull request #3478 from edolstra/ignore-failed-data
Downloader: Only write data to the sink on a 200 response
2020-04-08 17:15:53 +02:00
Ben Burdette 47ed067d45 initializer style 2020-04-08 09:07:58 -06:00
Eelco Dolstra 9ed097db7b
Merge pull request #3468 from Infinisil/functionArgsPositions
Make function arguments retain position info
2020-04-08 15:29:39 +02:00
Eelco Dolstra 1ab8d6ac18
Downloader: Only write data to the sink on a 200 response
Hopefully fixes #3278.
2020-04-08 15:27:09 +02:00
Ben Burdette 00c507cc52 columnRange -> column 2020-04-07 14:36:32 -06:00
Ben Burdette 20c0984a46 remove columnrange; switch to fmt in error.cc 2020-04-07 10:14:15 -06:00
mlatus 9d04b5da17 nix run using $SHELL as default command 2020-04-07 20:29:40 +08:00
Eelco Dolstra 55cefd41d6 Merge branch 'fetchgit-recursive' of https://github.com/blitz/nix 2020-04-07 13:45:17 +02:00
Eelco Dolstra cd39709003 Cleanup 2020-04-07 09:27:17 +02:00
Eelco Dolstra 26aeeb7653 Add FIXME
(cherry picked from commit 2f494531b7)
2020-04-07 09:09:43 +02:00
Eelco Dolstra a6dfa3cb85 PathInput: Add some methods
(cherry picked from commit 78ad5b3d91)
2020-04-07 09:09:43 +02:00
Eelco Dolstra f58a9b0e62 Respect the narHash attribute in more input types
(cherry picked from commit a6ff66b658)
2020-04-07 09:09:18 +02:00
Eelco Dolstra 670feb000a Add 'path' fetcher
This fetchers copies a plain directory (i.e. not a Git/Mercurial
repository) to the store (or does nothing if the path is already a
store path).

One use case is to pin the 'nixpkgs' flake used to build the current
NixOS system, and prevent it from being garbage-collected, via a
system registry entry like this:

  {
      "from": {
          "id": "nixpkgs",
          "type": "indirect"
      },
      "to": {
          "type": "path",
          "path": "/nix/store/rralhl3wj4rdwzjn16g7d93mibvlr521-source",
          "lastModified": 1585388205,
          "rev": "b0c285807d6a9f1b7562ec417c24fa1a30ecc31a"
      },
      "exact": true
  }

Note the fake "lastModified" and "rev" attributes that ensure that the
flake gives the same evaluation results as the corresponding
Git/GitHub inputs.

(cherry picked from commit 12f9379123)
2020-04-07 09:08:51 +02:00
Eelco Dolstra 462421d345 Backport libfetchers from the flakes branch
This provides a pluggable mechanism for defining new fetchers. It adds
a builtin function 'fetchTree' that generalizes existing fetchers like
'fetchGit', 'fetchMercurial' and 'fetchTarball'. 'fetchTree' takes a
set of attributes, e.g.

  fetchTree {
    type = "git";
    url = "https://example.org/repo.git";
    ref = "some-branch";
    rev = "abcdef...";
  }

The existing fetchers are just wrappers around this. Note that the
input attributes to fetchTree are the same as flake input
specifications and flake lock file entries.

All fetchers share a common cache stored in
~/.cache/nix/fetcher-cache-v1.sqlite. This replaces the ad hoc caching
mechanisms in fetchGit and download.cc (e.g. ~/.cache/nix/{tarballs,git-revs*}).

This also adds support for Git worktrees (c169ea5904).
2020-04-07 09:03:14 +02:00
Ben Burdette 55c96b64e4 comment cleanup 2020-04-06 20:14:48 -06:00
Ben Burdette ec449c8450 constructor style basically working 2020-04-06 19:43:22 -06:00
Ben Burdette 85f14c4582 add libutil, libexpr include dirs 2020-04-06 11:15:01 -06:00
Ben Burdette 216263c36f Merge branch 'master' into error-format 2020-04-06 10:00:00 -06:00
Cole Helbling c976cb0b8a
Don't retry on "unsupported protocol" error
When encountering an unsupported protocol, there's no need to retry.
Chances are, it won't suddenly be supported between retry attempts;
error instead. Otherwise, you see something like the following:

    $ nix-env -i -f git://git@github.com/foo/bar
    warning: unable to download 'git://git@github.com/foo/bar': Unsupported protocol (1); retrying in 335 ms
    warning: unable to download 'git://git@github.com/foo/bar': Unsupported protocol (1); retrying in 604 ms
    warning: unable to download 'git://git@github.com/foo/bar': Unsupported protocol (1); retrying in 1340 ms
    warning: unable to download 'git://git@github.com/foo/bar': Unsupported protocol (1); retrying in 2685 ms

With this change, you now see:

    $ nix-env -i -f git://git@github.com/foo/bar
    error: unable to download 'git://git@github.com/foo/bar': Unsupported protocol (1)
2020-04-05 09:00:34 -07:00
Ben Burdette 1221ae3dd0 libexpr 2020-04-05 07:12:16 -06:00
Ben Burdette 9a8b3e9747 move out of tests/ 2020-04-03 14:55:26 -06:00
Ben Burdette 9bb528d392 handle Pos instead of individual file/line/columnrange args 2020-04-03 13:15:59 -06:00
Eelco Dolstra 63fa92605b nix-env: Refuse to operate on a new-style profile
This prevents users from accidentally nuking their profile via
nix-env.

(cherry picked from commit 021634e3e3)
2020-04-03 20:14:34 +02:00
Ben Burdette 7b7801d3f0 variadic args for hint format 2020-04-03 08:48:20 -06:00
Ben Burdette c6b3fcddb0 formatted with astyle 2020-04-02 16:02:40 -06:00
Ben Burdette 1c329ca433 indenting 2020-04-02 14:25:43 -06:00
Andreas Rammhold 4fc4eb6c93 libexpr: remove unused attrError
The attrError variable is no longer used but still allocated on every
call to the findAlongAttrPath function.
2020-04-02 17:04:00 +02:00
Silvan Mosberger c34e96f7e0
Make function arguments retain position info
This allows querying the location of function arguments. E.g.

  builtins.unsafeGetAttrPos "x" (builtins.functionArgs ({ x }: null))

  => { column = 57; file = "/home/infinisil/src/nix/inst/test.nix"; line = 1; }
2020-04-02 05:52:52 +02:00
Ben Burdette e697884f65 using std:: everywhere; fix a formatting error; add exception flags 2020-04-01 21:30:19 -06:00
Ben Burdette dd7b8183a5 indenting 2020-04-01 16:20:20 -06:00
Ben Burdette 8713aeac5e remove using std::*, switch to include guard 2020-04-01 15:51:14 -06:00
Ben Burdette 5b3aefff85 add some explanatory comments 2020-03-31 12:42:41 -06:00
Ben Burdette 9e7b89bf10 rename errors/warnings 2020-03-31 11:56:37 -06:00
Ben Burdette 09652f597c enum style 2020-03-31 09:36:20 -06:00
Eelco Dolstra a7540294cf
Merge pull request #3460 from NixOS/dev-shell
Backport 'nix dev-shell' from the flakes branch
2020-03-31 14:46:15 +02:00
Eelco Dolstra 3166b97174 nix shell -> nix dev-shell 2020-03-31 13:45:28 +02:00
mlatus 12556e5709 fix placeholder not substituted in passAsFile 2020-03-31 19:40:16 +08:00
John Ericson 7e9a2718f0 s/outputHashRecursive/ingestionMethod/c 2020-03-30 22:36:15 +00:00
John Ericson 51afea3af2 Never cast FileIngestionMethod to or from boolean 2020-03-30 22:31:51 +00:00
John Ericson c251b011cd Merge remote-tracking branch 'upstream/master' into enum-FileIngestionMethod 2020-03-30 18:16:44 -04:00
John Ericson bbbb7c1bc7 Use auto with some FileIngestionMethod local variables 2020-03-30 18:15:55 -04:00
Eelco Dolstra e1a94ad852 Backport 'nix dev-shell' from the flakes branch
This also adds a '--profile' option to 'nix build' (replacing 'nix-env
--set').
2020-03-30 19:16:45 +02:00
Ben Burdette 35c7bab09a build with make 2020-03-30 09:14:29 -06:00
Eelco Dolstra 367577d9a6 Fix macOS build 2020-03-30 17:00:40 +02:00
Eelco Dolstra e322a16523 Remove global -I flags
(cherry picked from commit 2c692a3b14)
2020-03-30 15:30:19 +02:00
Julian Stecklina 40c023ecfe fetchGit: don't use std::filesystem to filter git repos
Using std::filesystem means also having to link with -lstdc++fs on
some platforms and it's hard to discover for what platforms this is
needed. As all the functionality is already implemented as utilities,
use those instead.
2020-03-30 00:32:42 +02:00
Bjørn Forsman f686efeed4 fetchGit: fix submodule corner case by fetching all refs from cacheDir
Due to fetchGit not checking if rev is an ancestor of ref (there is even
a FIXME comment about it in the code), the cache repo might not have the
ref even though it has the rev. This doesn't matter when submodule =
false, but the submodule = true code blows up because it tries to fetch
the (missing) ref from the cache repo.

Fix this in the simplest way possible: fetch all refs from the local
cache repo when submodules = true.

TODO: Add tests.
2020-03-29 22:29:58 +02:00
Bjørn Forsman cc522d0d23 fetchGit: fix submodules = true for dirty trees 2020-03-29 22:29:58 +02:00
Bjørn Forsman b306b7039e fetchGit: checkout rev instead of latest ref
Major bugfix for the submodules = true code path.

TODO: Add tests.
2020-03-29 22:29:58 +02:00
Bjørn Forsman 369fffd6f1 fetchGit: add submodules attribute to the .link file
The .link file is used as a lock, so I think we should put the
"submodule" attribute in there since turning on submodules creates a new
.link file path.
2020-03-29 22:29:58 +02:00
Bjørn Forsman 6864ad7cf5 fetchGit: fix submodule output attribute
Before this change it would be false for all evaluations but the first.
Now it follows the input argument (as it should).
2020-03-29 22:29:58 +02:00
Bjørn Forsman 002a3a95dc fetchGit: fix "fatal: couldn't find remote ref refs/heads/master" issue with submodules 2020-03-29 22:29:58 +02:00
Julian Stecklina cc4fe977e5 Link to stdc++fs
Some platforms seem to still require linking with stdc++fs to enable
STL std::filesystem support.
2020-03-29 22:29:58 +02:00
Julian Stecklina 435366ed3c Rename fetchGit fetchSubmodules to just submodules 2020-03-29 22:29:58 +02:00
Julian Stecklina c8d33de777 Add git submodule fixes from @bjornfor
This fixes fetching repositories with no submodules and also cleans up
.git files in checkouts.
2020-03-29 22:29:57 +02:00
Julian Stecklina f58604ac32 Add fetchSubmodules to builtins.fetchGit
There are some downsides to this features:

 - Submodules are not cached (unlike the root repo),
 - Full checkouts are created in a temporary directory.
2020-03-29 22:29:57 +02:00
John Ericson 225e62a56a Replace some bool recursive with a new FileIngestionMethod enum 2020-03-29 15:16:20 -04:00
Ben Burdette 759f39800b remove util.hh from deps 2020-03-27 10:55:09 -06:00
Ben Burdette 00eb3fcb7a more cleanup 2020-03-27 10:13:46 -06:00
Ben Burdette a3ef00be6c camelcase; optional hint 2020-03-27 10:03:02 -06:00
Ben Burdette d44c9c5581 some colors 2020-03-25 11:20:44 -06:00
Ben Burdette 3582dc3c88 programName as static member var 2020-03-25 10:52:03 -06:00
Ben Burdette fc310eda3a switch to one level of builder function, not subobject functions 2020-03-24 14:24:57 -06:00
Ben Burdette 0166e7ab6d MkNixCode, MkErrLine approach 2020-03-24 11:21:35 -06:00
Ben Burdette 4171ab4bbd renaming 2020-03-24 09:18:23 -06:00
Eelco Dolstra 0a10854f85 Misc changes from the flakes branch 2020-03-24 14:34:47 +01:00
Eelco Dolstra c85097da7c Fix --refresh with --no-net
https://hydra.nixos.org/build/110879699
(cherry picked from commit 5bbe793abf)
2020-03-24 14:26:23 +01:00
Eelco Dolstra 6b824c78f1 nix: Add --refresh as an alias for --tarball-ttl 0
(cherry picked from commit e721f99817)
2020-03-24 14:26:23 +01:00
Eelco Dolstra 777e21e596 nix path-info --json: Print hash in SRI format
(cherry picked from commit 442e665d6d)
2020-03-24 14:26:23 +01:00
Eelco Dolstra 7a8de57d3e Pretty-print 'nix why-depends' / 'nix-store -q --tree' output
Extracted from 678301072f.
2020-03-24 14:26:23 +01:00
Eelco Dolstra 4260a22a55 absPath(): Use std::optional
(cherry picked from commit 1bf9eb21b7)
2020-03-24 14:25:28 +01:00
Eelco Dolstra f9611c7ae4 buildenv: Eliminate global variables, other cleanup
(cherry picked from commit b82f75464d)
2020-03-24 14:06:47 +01:00
Eelco Dolstra 76e7d958ed Fix coverage build
https://hydra.nixos.org/build/110757285
(cherry picked from commit b430a81a1f)
2020-03-24 14:06:47 +01:00
Eelco Dolstra 231a8aa2c2 nix edit: Support non-derivation attributes
E.g.

  $ nix edit .#nixosConfigurations.bla

now works.

(cherry picked from commit d2032edb2f)
2020-03-24 14:06:47 +01:00
Eelco Dolstra c1ca4f0acc findAlongAttrPath(): Return position
(cherry picked from commit 0b013a54dc)
2020-03-24 14:06:47 +01:00
Eelco Dolstra 1eb952d27a findAlongAttrPath(): Throw AttrPathNotFound
(cherry picked from commit 6b0ca8e803)
2020-03-24 14:06:47 +01:00
Eelco Dolstra edc34cc1a2 Add function for quoting strings
(cherry picked from commit 7dcf5b011a)
2020-03-24 13:44:04 +01:00
Eelco Dolstra 5a7e7fc35f Use std::string_view
(cherry picked from commit 6529490cc1)
2020-03-24 13:26:37 +01:00
Eelco Dolstra c34a20e1f6 EvalState::allocAttr(): Add convenience method
(cherry picked from commit c02da99757)
2020-03-24 13:26:37 +01:00
Ben Burdette aadd59d005 error test 2020-03-23 15:29:49 -06:00
Eelco Dolstra 5885e20404
Merge pull request #3429 from LnL7/darwin-sandbox
darwin sandbox
2020-03-23 09:13:36 +01:00
Ben Burdette f694f43d7d straightforward port of rust mockup code 2020-03-22 12:25:47 -06:00
Daiderd Jordan 2e9bc1245c
sandbox: fix /bin/sh on catalina
Sadly 10.15 changed /bin/sh to a shim which executes bash, this means it
can't be used anymore without also opening up the sandbox to allow bash.

    Failed to exec /bin/bash as variant for /bin/sh (1: Operation not permitted).
2020-03-20 22:12:30 +01:00
Daiderd Jordan f6c122aaeb
sandbox: allow pty devices
Nix now runs builds with a pseudo-terminal to enable colored build
output.
2020-03-20 21:58:45 +01:00
Daiderd Jordan 7f2df903d9
libstore: relax default sandbox-paths on darwin 2020-03-20 21:31:20 +01:00
Daiderd Jordan afb78ebd34
libstore: disable resolve-system-dependencies hook
This is used to determine the dependency tree of impure libraries so nix
knows what paths to open in the sandbox.  With the less restrictive
defaults it isn't needed anymore.
2020-03-20 21:21:56 +01:00
jakobrs c5a488afc0 Remove the --delete option for --gc
Running `nix-store --gc --delete` will, as of Nix 2.3.3, simply fail
because the --delete option conflicts with the --delete operation.

  $ nix-store --gc --delete
  error: only one operation may be specified
  Try 'nix-store --help' for more information.

Furthermore, it has been broken since at least Nix 0.16 (which was
released sometime in 2010), which means that any scripts which depend
on it should have been broken at least nine years ago. This commit
simply formally removes the option. There should be no actual difference
in behaviour as far as the user is concerned: it errors with the exact
same error message. The manual has been edited to remove any references
to the (now gone) --delete option.

Other information:
* Path for Nix 0.16 used:
  /nix/store/rp3sgmskn0p0pj1ia2qwd5al6f6pinz4-nix-0.16
2020-03-19 19:41:23 +01:00
Eelco Dolstra ef74fafc03
nix repl: Put EvalState on the heap
See 0629601da1.
2020-03-19 13:52:28 +01:00
Eelco Dolstra b244e65cdb
nix repl: Scan NixRepl for GC roots
Fixes #3175.
2020-03-19 13:50:01 +01:00
John Ericson 68fe0d9809 Add missing #include <regex> 2020-03-13 21:24:35 -04:00
Eelco Dolstra 779ef8f5ef
Merge pull request #3380 from contrun/no-attr-path-for-installed
display attr-path only when queried available
2020-03-13 19:26:20 +01:00
YI b6d794fb8d display attr-path only when queried available 2020-03-14 00:36:26 +08:00
Eelco Dolstra b816515f61
Fix ca-references feature check
Fixes #3406.
2020-03-13 13:15:51 +01:00
Eelco Dolstra d048577909
Merge pull request #3403 from hercules-ci/issue-3398-path-info-cache-ttls
pathInfoCache: Respect disk cache TTLs #3398
2020-03-12 11:43:31 +01:00
Robert Hensing 3f55f8a8fb pathInfoCache: Respect disk cache TTLs #3398 2020-03-12 10:30:28 +01:00
Will Dietz 15edd2349e local.mk: fix user-env.cc dep on buildenv.nix.gen.hh, resolve occasional build failure 2020-03-12 00:51:56 +01:00
Eelco Dolstra 9950cdec35 Move some corepkgs into the nix binary 2020-03-11 16:57:48 +01:00
Eelco Dolstra e02481ded2 parseExprFromString(): Use std::string_view 2020-03-11 16:56:29 +01:00
Eelco Dolstra 8a1d8701f6
nix-store -q --graph: Fix edges
Fixes #3389.
2020-03-10 11:11:46 +01:00
Eelco Dolstra 983fab7ea9
dotgraph.cc: Remove dead code 2020-03-10 11:06:55 +01:00
Eelco Dolstra d37dc71e3c
nix-build: Fix !<output> handling
This was broken by 22a754c091.

https://hydra.nixos.org/eval/1573669
2020-03-04 13:56:17 +01:00
Eelco Dolstra 75db069f92
Optimise Derivation::unparse()
In

  nix-instantiate --dry-run '<nixpkgs/nixos/release-combined.nix>' -A nixos.tests.simple.x86_64-linux

this reduces time spent in unparse() from 9.15% to 4.31%. The main
culprit was appending characters one at a time to the destination
string. Even though the string has enough capacity, push_back() still
needs to check this on every call.
2020-03-04 11:44:45 +01:00
Eelco Dolstra 401b5bc541
builtins.cache: Cache regular expressions
The evaluator was spending about 1% of its time compiling a small
number of regexes over and over again.
2020-03-04 11:44:33 +01:00
Eelco Dolstra 22a754c091
Fix GC failures on bad store path names
It failed on names like '/nix/store/9ip48nkc9rfy0a4yaw98lp6gipqlib1a-'.
2020-02-28 18:07:10 +01:00
Eelco Dolstra 2e953b567e
Merge pull request #3325 from xzfc/clean-tmpdir
nix-shell: clean up the tmpDir and escape variables
2020-02-19 21:29:18 +01:00
Albert Safin f2a03acf3f nix-shell: clean up the tmpDir and escape variables
The problem fixed: each nix-shell invocation creates a new temporary
directory (`/tmp/nix-shell-*`) and never cleans up.

And while I'm here, shellescape all variables inlined into the rcfile.
See what might happen without escaping:

    $ export TZ="';echo pwned'"
    $ nix-shell -p hello --run hello
    pwned
    Hello, world!
2020-02-19 14:28:49 +00:00
Eelco Dolstra 2a14c28669
Merge pull request #3357 from carlosdagos/pure-nix-shell-proxy-env
Pass through http proxy env vars in pure shell
2020-02-19 13:02:02 +01:00
Eelco Dolstra c4d3674de6
Merge pull request #3353 from tbsmoest/priv_tobias_pr_set_deathsig-1.4
Fix PR_SET_PDEATHSIG results in Broken pipe (#2395)
2020-02-19 12:29:12 +01:00
Eelco Dolstra 553e584f92
LocalStore::checkDerivationOutputs(): Improve error message 2020-02-18 17:51:48 +01:00
Eelco Dolstra d8fd31f50f
Disable the progress bar if $TERM == dumb or unset
Fixes #3363.
2020-02-18 17:51:18 +01:00
Tobias Möst 3e347220c8 Fix PR_SET_PDEATHSIG results in Broken pipe (#2395)
The ssh client is lazily started by the first worker thread, that
requires a ssh connection. To avoid the ssh client to be killed, when
the worker process is stopped, do not set PR_SET_PDEATHSIG.
2020-02-14 07:51:44 +01:00
Carlos D d78141a886 Pass through http proxy env vars in pure shell 2020-02-14 16:11:22 +11:00
Eelco Dolstra 9af10b753c Bindings::get(): std::optional<Attr *> -> Attr *
Returning a nullable type in an optional is silly.
2020-02-13 17:15:05 +01:00
Eelco Dolstra d8972317fc Prevent uninitialized StorePath creation 2020-02-13 16:12:16 +01:00
Eelco Dolstra d82b78bf51
Fix segfault in gcc on i686-linux
src/libstore/ssh-store.cc: In constructor 'nix::SSHStore::SSHStore(const string&, const Params&)':
  src/libstore/ssh-store.cc:31:21: internal compiler error: Segmentation fault
               compress)
                       ^
  Please submit a full bug report,
  with preprocessed source if appropriate.

https://hydra.nixos.org/build/111545609
2020-02-07 13:01:48 +01:00
Eelco Dolstra db88cb401b
Merge pull request #3344 from LnL7/ssh-ng-remote-params
ssh-store: add remote-store and remote-program query params
2020-02-04 10:10:08 +01:00
Daiderd Jordan 8745c63d3c
ssh-store: add remote-store and remote-program query params
Brings the functionality of ssh-ng:// in sync with the legacy ssh://
implementation.  Specifying the remote store uri enables various useful
things. eg.

    $ nix copy --to ssh-ng://cache?remote-store=file://mnt/cache --all
2020-02-03 23:22:28 +01:00
Eelco Dolstra c5319e5d0b
Show "warning:" in yellow instead of red 2020-02-01 12:37:22 +01:00
Eelco Dolstra 7be1a07a45
Merge pull request #3335 from domenkozar/retry-429
retry on HTTP status code 429
2020-01-29 16:22:46 +01:00
Domen Kožar 48ddb8e481
retry on HTTP status code 429 2020-01-29 11:47:39 +01:00
Robin Gloster f8dbde0813
structured-attrs: chown .attrs.* files to builder
Otherwise `chmod .`'ing the build directory doesn't work anymore, which
is done in nixpkgs if sourceRoot is set to '.'.
2020-01-23 17:38:07 +01:00
Eelco Dolstra d506bd587a Fix clang warning 2020-01-22 21:20:01 +01:00
Eelco Dolstra aef635da78 Fix derivation computation with __structuredAttrs and multiple outputs
Fixes

  error: derivation '/nix/store/klivma7r7h5lndb99f7xxmlh5whyayvg-zlib-1.2.11.drv' has incorrect output '/nix/store/fv98nnx5ykgbq8sqabilkgkbc4169q05-zlib-1.2.11-dev', should be '/nix/store/adm7pilzlj3z5k249s8b4wv3scprhzi1-zlib-1.2.11-dev'
2020-01-21 21:14:13 +01:00
Daiderd Jordan 8b3217f832
build: remove warning when in sandboxing test mode
Introduced in 66fccd5832, but somehow
breaks the secure-drv-outputs test.
2020-01-13 22:09:18 +01:00
Eelco Dolstra c3181e21e7 Tweak error message 2020-01-13 21:52:03 +01:00
Eelco Dolstra bfaa4db7bd Merge branch 'assert-show-expression' of https://github.com/LnL7/nix 2020-01-13 21:49:55 +01:00
John Ericson d64ab5131c unbreak build without pch 2020-01-13 21:45:33 +01:00
Eelco Dolstra 835e541144 Fix build
https://hydra.nixos.org/eval/1564374
2020-01-13 21:34:54 +01:00
Daiderd Jordan 307bcb9a8e
libexpr: show expression in assertion errors
Includes the expression of the condition in the assertion message if
the assertion failed, making assertions much easier to debug. eg.

    error: assertion (withPython -> (python2Packages != null)) failed at pkgs/tools/security/nmap/default.nix:11:1
2020-01-11 15:45:41 +01:00
Yorick a350d0beb0
json-to-value: use unique_ptr instead of raw pointers 2020-01-09 22:46:41 +01:00
Yorick f1fac0b5c3
builtins.fromJSON: use nlohmann/json parser instead of custom parser 2020-01-09 17:38:27 +01:00
Nikola Knezevic 52a8f9295b Add support for \u escape in fromJSON
As fromTOML supports \u and \U escapes, bring fromJSON on par. As JSON defaults
to UTF-8 encoding (every JSON parser must support UTF-8), this change parses the
`\u hex hex hex hex` sequence (\u followed by 4 hexadecimal digits) into an
UTF-8 representation.

Add a test to verify correct parsing, using all escape sequences from json.org.
2020-01-07 00:09:58 +01:00
Nikola Knezevic cb2d348d48 Remove redundant check in parseJSONString 2020-01-07 00:09:58 +01:00
Eelco Dolstra bc22a7ee6a Fix use of uninitialized store path
Fixes 'building of '/nix/store/00000000000000000000000000000000-': ...'.
2020-01-06 22:20:10 +01:00
Eelco Dolstra e2988f48a1
Merge pull request #3303 from LnL7/darwin-sandbox
build: fix sandboxing on darwin
2020-01-06 20:56:35 +01:00
Daiderd Jordan 66fccd5832
build: fix sandboxing on darwin
Starting ba87b08f85 getEnv now returns an
std::optional which means these getEnv() != "" conditions no longer happen
if the variables are not defined.
2020-01-05 20:23:52 +01:00
Eelco Dolstra 0486e87791
Merge pull request #3302 from LnL7/darwin-repair-with-sandbox
build: fix path repairing with the darwin sandbox
2020-01-05 16:26:17 +01:00
Eelco Dolstra cb90e382b5 Hide FunctionCallTrace constructor/destructor
This prevents them from being inlined. On gcc 9, this reduces the
stack size needed for

  nix-instantiate '<nixpkgs>' -A texlive.combined.scheme-full --dry-run

from 12.9 MiB to 4.8 MiB.
2020-01-05 16:21:34 +01:00
Daiderd Jordan 7d448bc966
build: fix path repairing when hash rewriting is required
Handle store path repairing on darwin when sandboxing is enabled. Unlike
on linux sandboxing on darwin still requires hash rewriting.
2020-01-04 20:25:25 +01:00
Daiderd Jordan b33fefcb92
build: recover store path when replacing fails
This shouldn't happen in normal circumstances, but just in case
attempt to move the temporary path back if possible.
2020-01-04 20:24:27 +01:00
edef c65a6fa86a passAsFile: leave out the hash prefix
Having a colon in the path may cause issues, and having the hash
function indicated isn't actually necessary. We now verify the path 
format in the tests to prevent regressions.
2020-01-02 23:56:06 +00:00
Puck Meerburg 515c0a263e passAsFile: hash the attribute name instead of numbering sequentially
This makes the paths consistent without relying on ordering.

Co-authored-by: edef <edef@edef.eu>
2020-01-02 22:56:03 +00:00
Graham Christensen c502831a1d
exportReferencesGraph: support working
Before, we would get:

    [deploy@bastion:~]$ nix-store -r /nix/store/grfnl76cahwls0igd2by2pqv0dimi8h2-nixos-system-eris-19.09.20191213.03f3def.drv
    these derivations will be built:
      /nix/store/3ka4ihvwh6wsyhpd2qa9f59506mnxvx1-initrd-linux-4.19.88.drv
      /nix/store/ssxwmll7v21did1c8j027q0m8w6pg41i-unit-prometheus-alertmanager-irc-notifier.service.drv
      /nix/store/mvyvkj46ay7pp7b1znqbkck2mq98k0qd-unit-script-network-local-commands-start.drv
      /nix/store/vsl1y9mz38qfk6pyirjwnfzfggz5akg6-unit-network-local-commands.service.drv
      /nix/store/wi5ighfwwb83fdmav6z6n2fw6npm9ffl-unit-prometheus-hydra-exporter.service.drv
      /nix/store/x0qkv535n75pbl3xn6nn1w7qkrg9wwyg-unit-prometheus-packet-sd.service.drv
      /nix/store/lv491znsjxdf51xnfxh9ld7r1zg14d52-unit-script-packet-sd-env-key-pre-start.drv
      /nix/store/nw4nzlca49agsajvpibx7zg5b873gk9f-unit-script-packet-sd-env-key-start.drv
      /nix/store/x674wwabdwjrkhnykair4c8mpxa9532w-unit-packet-sd-env-key.service.drv
      /nix/store/ywivz64ilb1ywlv652pkixw3vxzfvgv8-unit-wireguard-wg0.service.drv
      /nix/store/v3b648293g3zl8pnn0m1345nvmyd8dwb-unit-script-acme-selfsigned-status.nixos.org-start.drv
      /nix/store/zci5d3zvr6fgdicz6k7jjka6lmx0v3g4-unit-acme-selfsigned-status.nixos.org.service.drv
      /nix/store/f6pwvnm63d0kw5df0v7sipd1rkhqxk5g-system-units.drv
      /nix/store/iax8071knxk9c7krpm9jqg0lcrawf4lc-etc.drv
      /nix/store/grfnl76cahwls0igd2by2pqv0dimi8h2-nixos-system-eris-19.09.20191213.03f3def.drv
    error: invalid file name 'closure-init-0' in 'exportReferencesGraph'

This was tough to debug, I didn't figure out which one was broken until I did:

    nix-store -r /nix/store/grfnl76cahwls0igd2by2pqv0dimi8h2-nixos-system-eris-19.09.20191213.03f3def.drv 2>&1 | grep  nix/store | xargs -n1 nix-store -r

and then looking at the remaining build graph:

    $ nix-store -r /nix/store/grfnl76cahwls0igd2by2pqv0dimi8h2-nixos-system-eris-19.09.20191213.03f3def.drv
    these derivations will be built:
      /nix/store/3ka4ihvwh6wsyhpd2qa9f59506mnxvx1-initrd-linux-4.19.88.drv
      /nix/store/grfnl76cahwls0igd2by2pqv0dimi8h2-nixos-system-eris-19.09.20191213.03f3def.drv
    error: invalid file name 'closure-init-0' in 'exportReferencesGraph'

and knowing the initrd build is before the system, then:

    $ nix show-derivation /nix/store/3ka4ihvwh6wsyhpd2qa9f59506mnxvx1-initrd-linux-4.19.88.drv
    {
      "/nix/store/3ka4ihvwh6wsyhpd2qa9f59506mnxvx1-initrd-linux-4.19.88.drv": {
        [...]
        "exportReferencesGraph": "closure-init-0 /nix/store/...-stage-1-init.sh closure-mdadm.conf-1 /nix/store/...-mdadm.conf closure-ubuntu.conf-2 ...",
        [...]
      }
    }

I then searched the repo for "in 'exportReferencesGraph'", found this
recently updated regex, and realized it was missing a "-".
2020-01-01 20:50:40 -05:00
Brian McKenna d25923263e Disable use-sqlite-wal under WSL
Before:

    $ nix-channel --update
    unpacking channels...
    warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy (SQLITE_PROTOCOL)
    warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy (SQLITE_PROTOCOL)
    warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy (SQLITE_PROTOCOL)
    warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy (SQLITE_PROTOCOL)
    warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy (SQLITE_PROTOCOL)

After:

    $ inst/bin/nix-channel --update
    unpacking channels...
    created 1 symlinks in user environment

I've seen complaints that "sandbox" caused problems under WSL but I'm
having no problems. I think recent changes could have fixed the issue.
2019-12-21 08:14:19 +11:00
Eelco Dolstra c84c843e33
tarfile.cc: Restore timestamps
This is needed to get the lastModified attribute of GitHub flakes.
2019-12-19 15:09:54 +01:00
Eelco Dolstra 2550c11373
tarfile.cc: Don't change the cwd
Nix is multithreaded so it's not safe to change the cwd.
2019-12-19 15:08:16 +01:00
Eelco Dolstra be32da0ed0
tarfile.cc: Style fixes 2019-12-19 15:01:58 +01:00
Eelco Dolstra ee235e764c
Merge branch 'libarchive' of https://github.com/yorickvP/nix 2019-12-19 14:47:18 +01:00
Eelco Dolstra 4511f09b49 nix make-content-addressable: Add --json flag
Fixes #3274.
2019-12-18 17:39:02 +01:00
Eelco Dolstra f8abbdd456 Add priority setting to stores
This allows overriding the priority of substituters, e.g.

  $ nix-store --store ~/my-nix/ -r /nix/store/df3m4da96d84ljzxx4mygfshm1p0r2n3-geeqie-1.4 \
    --substituters 'http://cache.nixos.org?priority=100 daemon?priority=10'

Fixes #3264.
2019-12-17 17:17:53 +01:00
Eelco Dolstra 54bf5ba422 nix-store -r: Handle symlinks to store paths
Fixes #3270.
2019-12-16 19:11:47 +01:00
Eelco Dolstra acb71aa5c6 Tweak error message 2019-12-15 10:44:53 +01:00
Eelco Dolstra 2b0365753a Merge branch 'limit_depth_resolveExprPath' of https://github.com/d-goldin/nix 2019-12-15 00:22:35 +01:00
Eelco Dolstra 8656a2de56
Merge pull request #3269 from xzfc/nix-shell
nix-shell: don't check for "nix-shell" in shebang script name
2019-12-14 23:24:32 +01:00
Eelco Dolstra ba6d2093c7 Fix progress bar 2019-12-14 23:19:04 +01:00
Albert Safin a70706b025 nix-shell: don't check for "nix-shell" in shebang script name 2019-12-14 15:37:20 +00:00
Eelco Dolstra ac9cc2ec08 Move some code 2019-12-13 19:10:39 +01:00
Eelco Dolstra b4edc3ca61 Don't leak exceptions 2019-12-13 19:05:26 +01:00
Eelco Dolstra e6bd88878e Improve gzip error message 2019-12-13 19:05:26 +01:00
Eelco Dolstra ca87707c90 Get rid of CBox 2019-12-13 19:05:26 +01:00
Dima d89d9958a7 bugfix: Adding depth limit to resolveExprPath
There is no termination condition for evaluation of cyclical
expression paths which can lead to infinite loops. This addresses
one spot in the parser in a similar fashion as utils.cc/canonPath
does.

This issue can be reproduced by something like:

```
ln -s a b
ln -s b a

nix-instantiate -E 'import ./a'
```
2019-12-13 14:51:30 +01:00
Eelco Dolstra e8aa2290ed Only install *.sb files on macOS 2019-12-13 14:42:55 +01:00
Eelco Dolstra 3e787423c2 Remove FIXME 2019-12-13 12:55:52 +01:00
Eelco Dolstra d1b238ec3c Simplify 2019-12-13 12:53:20 +01:00
Eelco Dolstra 2da4c61049 Merge branch 'libstore-ssh-better-exec-error-message' of https://github.com/Profpatsch/nix 2019-12-13 12:51:36 +01:00
Tom Bereknyei c6295a3afd Initial gzip support
Closes #3256
2019-12-13 03:34:15 -05:00
Profpatsch 38b29fb72c libstore/ssh: Improve error message on failing execvp
If the `throw` is reached, this means that execvp into `ssh` wasn’t
successful. We can hint at a usual problem, which is a missing `ssh`
executable.

Test with:

```
env PATH= ./result/bin/nix-copy-closure --builders '' unusedhost
```

and the bash version with

```
env PATH= ./result/bin/nix-copy-closure --builders '' localhost
```
2019-12-12 15:32:17 +01:00
Eelco Dolstra bbe97dff8b Make the Store API more type-safe
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).
2019-12-10 22:06:05 +01:00
Eelco Dolstra 98ef11677c EvalState::callFunction(): Make FunctionCallTrace use less stack space
The FunctionCallTrace object consumes a few hundred bytes of stack
space, even when tracing is disabled. This was causing stack overflows:

  $ nix-instantiate '<nixpkgs> -A texlive.combined.scheme-full --dry-run
  error: stack overflow (possible infinite recursion)

This is with the default stack size of 8 MiB.

Putting the object on the heap reduces stack usage to < 5 MiB.
2019-12-10 13:32:30 +01:00
Eelco Dolstra 61cc9f34d2 Remove UserLock self-lock check
This is no longer needed since we're not using POSIX locks anymore.
2019-12-09 23:57:33 +01:00
Yorick eba82b7c88
further clean up libarchive code 2019-12-09 17:21:46 +07:00
puck 28ee687adf Clean up libarchive support 2019-12-07 18:12:21 +00:00
Yorick fe7ec70e6b
remove rust unpack_tarfile ffi 2019-12-07 23:28:31 +07:00
Yorick 1355554d12
code 'cleanup' 2019-12-07 23:23:11 +07:00
Yorick f54c168031
add wrapper function around libarchive to c++ errors 2019-12-07 23:10:27 +07:00
Yorick 232b390766
fixup! libarchive proof of concept 2019-12-07 23:00:37 +07:00
Yorick 9ff5f6492f
libarchive proof of concept 2019-12-07 22:35:14 +07:00
Eelco Dolstra 3b9c9d34e5 Shut up clang warning
(cherry picked from commit 3392f1b778)
2019-12-05 20:41:44 +01:00
Eelco Dolstra 80ab95315d nix doctor: Fix typo
(cherry picked from commit 96c6b08ed7)
2019-12-05 20:40:52 +01:00
Eelco Dolstra 47a937d512 Show hash mismatch warnings in SRI format
(cherry picked from commit 63c5c91cc0)
2019-12-05 20:32:25 +01:00
Eelco Dolstra 0678e4d56a Move #include
(cherry picked from commit 8beedd4486)
2019-12-05 20:30:29 +01:00
Eelco Dolstra 79142cbbe1 Bindings: Add convenience method for requiring an attribute
(cherry picked from commit fb692e5f7b)
2019-12-05 20:29:15 +01:00
Eelco Dolstra 0d118ef0c9 Bindings::get(): Add convenience method
This allows writing attribute lookups as

    if (auto name = value.attrs->get(state.sName))
      ...

(cherry picked from commit f216c76c56)
2019-12-05 20:29:00 +01:00
Eelco Dolstra 5e449b43ed Initialize Command::_name
(cherry picked from commit d0a769cb06)
2019-12-05 20:21:22 +01:00
Eelco Dolstra ac67685606 Make subcommand construction in MultiCommand lazy
(cherry picked from commit a0de58f471)
2019-12-05 20:19:26 +01:00
Eelco Dolstra f964f428fe Move Command and MultiCommand to libutil
(cherry picked from commit f70434b1fb)
2019-12-05 20:13:47 +01:00
Eelco Dolstra f1b5c76c1a MultiCommand: Simplify construction
(cherry picked from commit 15a16e5c05)
2019-12-05 20:10:35 +01:00
Eelco Dolstra 092af3c826 Eliminate more pass-by-value in variadic calls 2019-12-05 19:58:52 +01:00
Eelco Dolstra 603b2f583c Revert "Make fmt() non-recursive"
This reverts commit 2b761d5f50.

Also *really* make fmt() take arguments by reference.
2019-12-05 19:58:49 +01:00
Eelco Dolstra 334b8f8af1 fmt(): Pass arguments by reference rather than by value 2019-12-05 17:40:46 +01:00
Eelco Dolstra ac2bc721d8 Merge remote-tracking branch 'origin/recursive-nix' 2019-12-02 12:34:46 +01:00