This .envrc file causes additional software to be loaded, but there is
no way to opt-out even if the software is not desired:
1. If I opt-in (i.e. `direnv allow`) the file, additional stuff that I
don't need is injected into my environment in a blocking way.
2. If I opt-out, *all* of the depot configuration (including `mg`) is
unloaded, as direnv configurations do not trivially nest.
I have to work around this constantly by making the file contain just
the line `source_up` and then setting `--assume-unchanged` on the git
index to avoid accidentally committing the file changes.
This is kind of silly, the people who *want* this stuff to be loaded
should devise a mechanism that loads it automatically but is opt-in.
This could be done e.g. by gating something on environment variables,
or having a shell hook, or whatever. Breaking expectations that hold
elsewhere in depot is not okay, however.
If you manually want a shell for a project, run `mg shell` either with
a target specification for that project (e.g. `mg shell //tvix/store`)
or in the project's folder.
You can also just use standard nix-shell invocations.
Change-Id: I0de43378424d0cb1e1279c72c47940fecf497bf0
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7531
Reviewed-by: tazjin <tazjin@tvl.su>
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
Autosubmit: tazjin <tazjin@tvl.su>
A few weeks ago, oberblastmeister did a release to crates.io so we can
stop importing it via GitHub.
Change-Id: I9d5fa5cd281685779c71b12fed45ed201a1db17e
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7532
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
This uses prost-build to build the proto files.
Change-Id: Ia99fcfa4a19c741683cf28a45202e1d9211f9131
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7286
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
Reviewed-by: Adam Joseph <adam@westernsemico.com>
This adds the PathInfo message, which hosts information about a Nix
Store path, mapping to either of a {Directory,File,Symlink}Node.
Change-Id: I79d871b6fad450d6a4ae4101fb72c51f9a83471f
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7132
Reviewed-by: Adam Joseph <adam@westernsemico.com>
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
This moves the castore.proto file into the //tvix/store/protos directory. Per-
component protos might make more sense, than a "tvix-wide" proto directory.
Change-Id: Ie728210174b041e9285a0e2ac605d715d0f0cbda
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7285
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Fixes b/212. Based on feedback in https://cl.tvl.fyi/c/depot/+/7492, all
uses of `NixAttrs::from_map` have been removed. Only `from_iter` and
`from_kv` remain.
Change-Id: I52e25f73018c2aa1843197427516b7a852503e2c
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7500
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Autosubmit: IslandUsurper <lyle@menteeth.us>
Allows for the removal of some BTreeMap usage when constructing NixAttrs
by allowing any iterator over 2-tuples to build a NixAttrs. Some
instances of BTreeMap didn't have anything to do with making NixAttrs,
and some were just the best tool for the job, so they are left using the
old `from_map` interface.
Change-Id: I668ea600b0d93eae700a6b1861ac84502c968d78
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7492
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
Maybe counter-intuitively the inner elements of a list or the
attribute values of an attribute set will be forced despite
pointer equality (but only one layer deep).
Change-Id: I485d96452fb56f5fb342d39039c9137725b33d3f
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7371
Reviewed-by: Adam Joseph <adam@westernsemico.com>
Tested-by: BuildkiteCI
This came up in the Nix Language channel today and I thought it
warranted a test case.
We did actually implement this correctly.
Change-Id: I4b37c92d06eb6e3a7f59ea3d10af38f2b0a93d53
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7493
Reviewed-by: sterni <sternenseemann@systemli.org>
Autosubmit: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Rust doesn't do tail-call elimination (still!) so the best we can
hope for here is to inline non-recursive invocations.
Change-Id: I78949967e48b006fcbf31786d8f6281cd122f36f
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7360
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Autosubmit: Adam Joseph <adam@westernsemico.com>
Before this, tvix was spending most of its time furiously re-parsing
and re-compiling nixpkgs, each time hoping to get a different result...
Change-Id: I1c0cfbf9af622c276275b1f2fb8d4e976f1b5533
Signed-off-by: Adam Joseph <adam@westernsemico.com>
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7361
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
With this change, the test introduced by cl/7370 passes.
Change-Id: Ie7d2f02a59d61151f14ebd328e6cfa5892cacfb0
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7375
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
Autosubmit: Adam Joseph <adam@westernsemico.com>
This passes all the function/thunk-pointer-equality tests in
cl/7369.
Change-Id: Ib47535ba2fc77a4f1c2cc2fd23d3a879e21d8b4c
Signed-off-by: Adam Joseph <adam@westernsemico.com>
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7358
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
The backtrace-on-stack-overflow create provides best-effort stack
traces when a stack overflow happens. Since it's running on the
(usually tiny) signal alternate stack this isn't easy.
This is guarded by a new `backtrace_overflow` feature flag and never
enabled (even if that feature is selected) for release builds. This
is strictly for debugging; there's crazy unsafe voodoo in there.
https://lib.rs/crates/backtrace-on-stack-overflow
Example output:
```
Stack Overflow:
0: backtrace_on_stack_overflow::handle_sigsegv
at /home/amjoseph/.cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-on-stack-overflow-0.2.0/src/lib.rs:93:40
1: <unknown>
2: __rust_probestack
3: tvix_eval::vm::VM::run_op
at src/vm.rs:399
4: tvix_eval::vm::VM::run
at src/vm.rs:388:23
5: tvix_eval::vm::VM::enter_frame
at src/vm.rs:360:22
6: tvix_eval::value::thunk::Thunk::force
at src/value/thunk.rs:116:25
7: tvix_eval::vm::VM::run_op
at src/vm.rs:801:37
8: tvix_eval::vm::VM::run
at src/vm.rs:388:23
9: tvix_eval::vm::VM::enter_frame
at src/vm.rs:360:22
10: tvix_eval::value::thunk::Thunk::force
at src/value/thunk.rs:116:25
...
```
Signed-off-by: Adam Joseph <adam@westernsemico.com>
Change-Id: I1d8a2017f836be7bf91a2223e7adacb86fa1dbb2
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7354
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
See cl/7368
Change-Id: I97630994c3d65f4d16414a0da236ce000a5b6d33
Signed-off-by: Adam Joseph <adam@westernsemico.com>
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7374
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
See cl/7372; Nix equality semantics require the ability to track
pointer equality of upvalue-sets.
Signed-off-by: Adam Joseph <adam@westernsemico.com>
Change-Id: I82ba517499cf370189a80355e4e46a5caaab7153
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7373
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
This test case checks two things:
* A sanity check that "pointer equality for functions" means not
just the lambda, but also the upvalues.
* To be pointer-equal, it is not enough for the upvalues to be
normal-form equal (i.e. `nix_eq()`-equal); the upvalues must be
*pointer*-equal. The second part of the test case checks for
this.
Signed-off-by: Adam Joseph <adam@westernsemico.com>
Change-Id: I4e59327a6f199b8212e97197b212e3c3934bb3f0
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7372
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
The "dep:" syntax in Cargo.toml is very new; crate2nix master has
support for it, but they have not yet made a release with this
update, and therefore the crate2nix in nixpkgs does not yet support
it.
Could we avoid using "dep:" for a few weeks to give crate2nix a
chance to release so I can bump the version in nixpkgs? I've opened
an issue asking crate2nix to make a release:
https://github.com/kolloch/crate2nix/issues/264
I propose that if they haven't acted within a month we stop waiting
and revert this at that time.
Change-Id: I999a72429db667bedf4b2cdba27cb63b3f3d9657
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7350
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
When we start unrecursivifying (sp?) things, Rust's borrow checker
is going to be a headache; its magic only works when you use the CPU
stack as your call stack.
Fixing the borrow checker issues usually involves adding lots of
`clone()`s. Right now `NixList` is the only variant of `Value` that
isn't cheap to clone() -- all the others are either a wrapper around
Rc or else are of bounded size.
Note that this requires dropping the `DerefMut for NixList` instance
and using `Vec<Value>` instead in those situations.
Change-Id: I5a47df66855342aa2064f8f3cb7934ff422d26bd
Signed-off-by: Adam Joseph <adam@westernsemico.com>
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7359
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
When comparing Nix values for equality, an issue can occur where
recursive values contain thunks to themselves which causes borrow
errors when forcing them for comparison later down the line.
To work around this we clone the values for now. There might be some
optimisations possible like checking for thunk equality directly and
short-circuiting on that (we have to check what Nix does).
Change-Id: I7e75c992ea68f100058f52b4b46168da7d671994
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7314
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
When passing multiple arguments, every intermediate callable needs to
be forced as this is expected by the VM's call_value function.
Also adds a debug assertion for this which makes it easier to spot
exactly what went wrong.
Change-Id: I3aa519cb6cdaab713bd18282bef901c4cd77c535
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7312
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
This function covers builtins.genericClosure, seemingly including
weird behaviour around the order in which the work set is processed.
For some reason, in C++ Nix the test expectation is written in XML
which we do not yet support, so I have created a new expectation file
using `nix-instantiate --eval --strict` on the file (yes, using C++
Nix).
Change-Id: Id90e7117d120dc66d963a51083c4d8e8f2d9f181
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7311
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
This implementation closely follows the original implementation in
Nix, including the use of an equality-based "set" structure to track
keys that have already been processed.
Note that this test does not yet enable the `notyetpassing` test for
builtins.genericClosure because (for as of yet unknown reasons) this
test compares against XML output (however, evaluating the test case
actually does work).
This takes us one step closer to nixpkgs eval.
This commit was written somewhere in the North Sea.
Co-Authored-By: Griffin Smith <root@gws.fyi>
Change-Id: I450a866e6f2888b27c2fe7c7f77ce0f79bfe3e6c
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7310
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
Both //tvix/eval and //tvix/nix_cli have need to for rust tooling available
in $PATH.
Move this one level up, so it's accessible in all subdirectories.
Change-Id: I0763bbe9cefdc962f3a8f86c51e8f67cde8b4b04
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7248
Autosubmit: flokli <flokli@flokli.de>
Reviewed-by: sterni <sternenseemann@systemli.org>
Reviewed-by: grfn <grfn@gws.fyi>
Tested-by: BuildkiteCI
This detects if the second argument of a division is a zero (either as integer
or as float). If so, an error message is displayed.
This fixes b/219.
Change-Id: I50203d14a71482bc757832a2c8dee08eb7d35c49
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7258
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
As per the discussion in
https://cl.tvl.fyi/c/depot/+/7128/2..5/tvix/proto/castore.proto#b39, ref
sounds more like an external, stateful ID. Call this `digest`, to make
clear it's precisely this.
Change-Id: I81dd3769e2ce017de470ae92f72a38fb72015f10
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7134
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Reviewed-by: Adam Joseph <adam@westernsemico.com>
`buf` doesn't like protos with different package names in the same
directory.
Change-Id: I30806b46b88f103779faa40466461091a4a01e06
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7130
Reviewed-by: tazjin <tazjin@tvl.su>
Reviewed-by: Adam Joseph <adam@westernsemico.com>
Tested-by: BuildkiteCI
Make it clear these are symlinks, not hardlinks.
The term "link" is too heavily correlated to other meanings in IPFS/IPLD
world, and calling this symlink removes this confusion.
Change-Id: Id3f1eaa32098510b05f3e1a1348344503bcb4d5a
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7129
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
Reviewed-by: Adam Joseph <adam@westernsemico.com>
Add a new `documentation: Option<&'static str>` field to Builtin, and
populate it in the `#[builtins]` macro with the docstring of the builtin
function, if any.
Change-Id: Ic68fdf9b314d15a780731974234e2ae43f6a44b0
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7205
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
