Commit graph

11 commits

Author SHA1 Message Date
Rebecca Turner 727b43478c Add repl-overlays
Adds a `repl-overlays` option, which specifies files that can overlay
and modify the top-level bindings in `nix repl`. For example, with the
following contents in `~/.config/nix/repl.nix`:

    info: final: prev: let
      optionalAttrs = predicate: attrs:
        if predicate
        then attrs
        else {};
    in
      optionalAttrs (prev ? legacyPackages && prev.legacyPackages ? ${info.currentSystem})
      {
        pkgs = prev.legacyPackages.${info.currentSystem};
      }

We can run `nix repl` and use `pkgs` to refer to `legacyPackages.${currentSystem}`:

    $ nix repl --repl-overlays ~/.config/nix/repl.nix nixpkgs
    Lix 2.90.0
    Type :? for help.
    Loading installable 'flake:nixpkgs#'...
    Added 5 variables.
    Loading 'repl-overlays'...
    Added 6 variables.
    nix-repl> pkgs.bash
    «derivation /nix/store/g08b5vkwwh0j8ic9rkmd8mpj878rk62z-bash-5.2p26.drv»

Change-Id: Ic12e0f2f210b2f46e920c33088dfe1083f42391a
2024-04-08 17:11:47 -07:00
Robert Hensing b995c17f0e Merge pull request #10208 from 9999years/print-strings-directly
`:print` strings directly in `nix repl`

(cherry picked from commit 3539172fd2f7cee639ce46423c58beca4231f2db)
Change-Id: I1972f3bf3b56312851f38288509d371d37f21677
Upstream-PR: https://github.com/NixOS/nix/pull/10208
2024-04-07 19:10:43 -07:00
Rebecca Turner ee423f391d Rewrite REPL test parser
- Use a recursive descent parser so that it's easy to extend.
- Add `@args` to enable customizing command-line arguments
- Add `@should-start` to enable `nix repl` tests that error before
  entering the REPL
- Make sure to read all stdout output before comparing. This catches
  some extra output we were tossing out before!

Change-Id: I5522555df4c313024ab15cd10f9f04e7293bda3a
2024-04-05 13:14:21 -07:00
Rebecca Turner 84018e1264 Make repl_characterization.cc constants string_views
Change-Id: I96455ee365799ae87d9ab433cf102c691616a45e
2024-04-03 16:25:54 +00:00
Théophane Hufschmitt 6c29016a09 Merge pull request #9920 from 9999years/forbid-nested-debuggers
Forbid nested debuggers

(cherry picked from commit e164b39ee90fd655dbb7f479fdd4fbe38cc883bd)
Change-Id: Iff62f40fd251116516a63e2d3f9fb5b21480b16d
2024-03-31 17:28:25 +00:00
eldritch horrors afb839a0c9 libexpr: associate let exprs with the correct StaticEnv
static env association is from expr to its enclosing scope, but let
exprs set their association to their *inner* scope. this skips one level
of envs and will cause segfaults if the parent is a with expr.

fixes #145

Change-Id: I1d22146110f071ede21b4eed7ed34b5850ef2ef3
2024-03-18 14:15:22 -07:00
jade 7d361f1a82 Test that :st does ... something
Change-Id: I97c00b5eb1288f68d8c2b484436cc185d040b8b2
2024-03-15 12:31:16 -07:00
jade 78513b1fc8 repl_characterization: eat newlines after commands and source-dir paths
This is because they are unrepresentable in the source files with
commentary but not in the output, so we should just eat them in
normalization. It's ok.

Change-Id: I2cb7e8b3fc7b00874885bb287cbaa200b41cb16b
2024-03-15 12:31:16 -07:00
jade 8a8715af89 Add regression tests for #9917, #9918
Change-Id: Ib0591e1499c5dba5e5a83ee75a899c9d16986827
2024-03-15 12:31:16 -07:00
jade 18ed6c3bdf Implement a repl characterization test system
This allows for automating using the repl without needing a PTY, with
very easy to write test files.

Change-Id: Ia8d7854edd91f93477638942cb6fc261354e6035
2024-03-15 12:31:16 -07:00
jade 38571c50e6 Implement a parser for a literate testing system for the repl
This parser can be reused for other purposes. It's inspired by
https://bitheap.org/cram/

Although eelco's impostor exists https://github.com/mobusoperandi/eelco,
it is not very nice to depend on out of tree testing frameworks with no
way to customize them.

Change-Id: Ifca50177e09730182baf0ebf829c3505bbb0274a
2024-03-14 14:30:38 -07:00