Per https://nnethercote.github.io/perf-book/hashing.html, we have
basically no reason to use the default hasher over a faster,
non-DoS-resistant hasher. This gives a nice perf boost basically for
free:
hello outpath time: [704.76 ms 714.91 ms 725.63 ms]
change: [-7.2391% -6.1018% -4.9189%] (p = 0.00 < 0.05)
Performance has improved.
Change-Id: If5587f444ed3af69f8af4eead6af3ea303b4ae68
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12046
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
Reviewed-by: Ilan Joselevich <personal@ilanjoselevich.com>
Autosubmit: aspen <root@gws.fyi>
Now that we can bind (potentially lazy, potentially lambda-containing)
values in the REPL and then reference them in subsequent evaluations,
it's important that the values to which we construct shared references
are shared across those subsequent evaluations - otherwise, we get
panics due to unknown source map locations, or dropped weak references
to globals.
This change assigns both the globals and the source map as fields on the
Repl after the first evaluation, and then passes those in (to the
EvaluationBuilder) on subsequent evaluations.
On the EvaluationBuilder side, there's some panicking introduced - this
is intentional, as my intent is for the builder to be configured
statically enough that panicking is the best way to report errors
here (it's always a bug to misconfigure an Evaluation, and we'd never
want to handle it dynamically).
Change-Id: I37225697235c22b683ca48a17d30fa8fedd12d1b
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11960
Reviewed-by: flokli <flokli@flokli.de>
Autosubmit: aspen <root@gws.fyi>
Tested-by: BuildkiteCI
Juggle around the internals of the tvix-cli crate so that we expose the
Repl as a public type with a `send` method, that sends a string to the
repl and *captures all output* so that it can be subsequently asserted
on in tests. Then, demonstrate that this works with a single (for now)
REPL test using expect-test to assert on the output of a single command
sent to the REPL.
As the REPL gets more complicated, this will allow us to make tests that
cover that complex behavior.
Change-Id: I88175bd72d8760c79faade95ebb1d956f08a7b83
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11958
Autosubmit: aspen <root@gws.fyi>
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
Allow binding variables at the REPL's toplevel in the same way the Nix
REPL does, using the syntax <ident> = <expr>. This fully, strictly
evaluates the value and sets it in the repl's "env", which gets passed
in at the toplevel when evaluating expressions.
The laziness behavior differs from Nix's, but I think this is good:
❯ nix repl
Welcome to Nix version 2.3.18. Type :? for help.
nix-repl> x = builtins.trace "x" 1
nix-repl> x
trace: x
1
nix-repl> x
1
vs tvix:
tvix-repl> x = builtins.trace "x" 1
trace: "x" :: string
tvix-repl> x
=> 1 :: int
tvix-repl> x
=> 1 :: int
Bug: https://b.tvl.fyi/issues/371
Change-Id: Ieb2d626b7195fa87be638c9a4dae2eee45eb9ab1
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11954
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
Autosubmit: aspen <root@gws.fyi>
Add a command, :p, to evaluate an expression and recursively print the
result, as if `--strict` had been passed on the command line.
Demonstration of this working:
❯ cargo r --bin tvix
Finished dev [unoptimized + debuginfo] target(s) in 0.27s
Running `target/debug/tvix`
tvix-repl> { x = (x: x) 1; }
=> { x = <CODE>; } :: set
tvix-repl> :p { x = (x: x) 1; }
=> { x = 1; } :: set
Change-Id: I1a81d7481160c30d2a4483c6308e25fa45f2dfdf
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11738
Autosubmit: aspen <root@gws.fyi>
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
Add a command to display help for the REPL, which can be either :? or
:h.
Change-Id: Ifdfd8c31130ca5afcde05a4c4276b768eb54c06f
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11737
Autosubmit: aspen <root@gws.fyi>
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
Prepare for introducing additional REPL commands by splitting out
the *parsing* of the repl commands, which returns a new ReplCommand
type, from the actual *handling* of the commands.
Change-Id: If81a53c1e2d90204d26ce3bb2ea9eebf7bb3fd51
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11734
Autosubmit: aspen <root@gws.fyi>
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
In preparation for adding some new functionality to the tvix REPL, break
it out into its own module.
Change-Id: I4fb78320e92562e3474a3724536cb22c1d893e57
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11733
Tested-by: BuildkiteCI
Autosubmit: aspen <root@gws.fyi>
Reviewed-by: flokli <flokli@flokli.de>
