Interestingly, the code is not any shorter, but a lot more
declarative, and all parsing footwork and error message generation is
done by the `Decoder` trait. \o/
Change-Id: Idb1064a3b5198e38e06e1860d4d71054ae53bbb9
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2499
Tested-by: BuildkiteCI
Reviewed-by: Profpatsch <mail@profpatsch.de>
`Text` and `Binary` should be self-explaining, they just match on the
primitive and throw an error otherwise.
OneOf is cool, because it allows the user to match on the
result type of decoding `inner`, and give a list of values that should
be allowed as the result type (the associated type `A` in the
`Decoder` trait).
Change-Id: Ia252e25194610555c17c37640a96953142f0a165
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2498
Tested-by: BuildkiteCI
Reviewed-by: Profpatsch <mail@profpatsch.de>
Shouldn’t use the netstring function, since that adds the length of
the containing string, which doesn’t make sense for numbers, they just
have their one length number and content.
Change-Id: I5591f6dd59154c5ef38d6e9b7300d19884a2d57b
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2497
Tested-by: BuildkiteCI
Reviewed-by: Profpatsch <mail@profpatsch.de>
This fell out of us moving the `U::List` to a `Vec`.
I noticed that now we have deep recursion for `U`s, which originally
wasn’t intended; reverting to contain `&[u8]` might be a good
experiment, as long as the lists stay a `Vec<&'a [u8]`, which was the
thing preventing us from parsing lists without allocating memory.
Change-Id: I4900c5dea460fa69a78ce0dbed5708495af5d2e1
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2495
Tested-by: BuildkiteCI
Reviewed-by: Profpatsch <mail@profpatsch.de>
`dec::RecordDot` accesses a specific field of a netencode record.
In order to implement this, either we’d have to introduce a type-level
string, but in all honesty this kind of typelevel circlejerking never
leads anywhere, so let’s change the trait to use `&self` after all.
Usage is pretty much the same, except actually more like you’d expect.
Change-Id: I5a7f1a3f587256c50df1b65c2969e5a7194bba70
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2494
Tested-by: BuildkiteCI
Reviewed-by: Profpatsch <mail@profpatsch.de>
Since we don’t necessarily need to decode deeply, we can make the
decoders take a `U` instead of a `T`.
Change-Id: I9704a21edb3922d58411e6807d027d684b18d390
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2492
Tested-by: BuildkiteCI
Reviewed-by: Profpatsch <mail@profpatsch.de>
Also change the toplevel `encode()` to take a `&U` instead of an owned
`U`.
Change-Id: I8e51540cc531e70ae1c94e3676f4dd88da7a924d
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2491
Tested-by: BuildkiteCI
Reviewed-by: Profpatsch <mail@profpatsch.de>
`U::Record` is required to be a hash map (later keys should be
ignored), so why not do the hash map immediately.
This surfaced a problem with read-http, because duplicate headers in
http are possible, but before they’d be silently ignored.
Now we merge them into a `U::List` in case, to be handled by
consumers of read-http.
Change-Id: Ifd594916f76e5acf9d08e705e0dec2c10a0081c9
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2490
Tested-by: BuildkiteCI
Reviewed-by: Profpatsch <mail@profpatsch.de>
We expect the users to pass an actual prog, not an argv, so 0 is the
program to exec into.
Also improve the exec error, by including the program we tried to exec
into (the rust IO error doesn’t contain the name).
Change-Id: I664f9f717e4f82bfc1b1da3bd7114124b7582d5f
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2489
Reviewed-by: Profpatsch <mail@profpatsch.de>
Tested-by: BuildkiteCI
Earlier we left the next level of values unencoded, since lists are
just concatenated netencode values. But I noticed that you can’t write
e.g. a `t_to_u` function, because only in the case of lists you need
to allocate memory.
Turns out that if we read the next level of values, everything is
handled the same as in `Record` and things suddenly start working.
We can also throw away some of the strange and ad-hoc parser helpers
we needed before, `skip` and `list_take`, since now those are just
normal `Vec::iter().skip()` and take.
Change-Id: Ibc476e028102944a65c2b64621047086cfc09aa5
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2488
Reviewed-by: Profpatsch <mail@profpatsch.de>
Tested-by: BuildkiteCI
Since `Text` is a scalar, it doesn’t make sense to delay the utf-8
verification to the consumer.
Change-Id: I36e4d228fbf35374d7c1addb4b24828cf6e927e5
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2478
Tested-by: BuildkiteCI
Reviewed-by: Profpatsch <mail@profpatsch.de>
a044a87084 removed boxes in T::List, but
the tests were not adjusted accordingly.
Seems like netencode fell victim to CI not recursing into attrsets not
generated by readTree in pipeline generation.
Change-Id: I65d58a82881059983f7d6bc7a32263c6671ccbba
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2486
Reviewed-by: Profpatsch <mail@profpatsch.de>
Tested-by: BuildkiteCI
Seems like 5d44df3af6 forgot to add the
newly split out crate to the dependencies of netencode_mustache.
CI didn't pick up on it since it is hidden away from readTree in an
attrset in a file.
Change-Id: I7df9a636d849de48a99562d1cda8c0e6765f4781
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2485
Tested-by: BuildkiteCI
Reviewed-by: Profpatsch <mail@profpatsch.de>
There is this semantic exit code schema championed by execline and
skaware tooling, and we refined and documented it a bit in lorri
d1d673d420/src/ops/mod.rs (L24-L35)
in the past.
This just transcribes the error messages into simple helper functions.
Applies the functions to the places where we would panic or die
`sys::exit()` instead.
Change-Id: I15ca05cd6f99a25a3378518be94110eab416354e
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2475
Tested-by: BuildkiteCI
Reviewed-by: Profpatsch <mail@profpatsch.de>
`exec_into_args` would just read argv and exec into it, but we want to
be able to write commands which take some positional arguments first.
Thus we split the invocation into `args_for_exec`, which returns the
positional arguments and prog, and then pass prog to `exec_into_args`
when we want to exec eventually (prog is still an iterator at this
point).
Change-Id: I0b180c1a100b96363fe33ba2c42034ed41716b7a
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2474
Tested-by: BuildkiteCI
Reviewed-by: Profpatsch <mail@profpatsch.de>
There might be exploits since we parsed the headers as utf8 even
though we actually want to interpret them as ASCII.
This fixes it, by using the ascii crate.
Thanks to @sterni for noticing.
Change-Id: I50b6a588d99b34e677cb22968cf0dfd8b331d11c
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2457
Reviewed-by: Profpatsch <mail@profpatsch.de>
Tested-by: BuildkiteCI
Splice a netencode record from stdin into the environment.
Change-Id: I7eac19e18164e070e4463ee431d9b0e955857b9c
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2454
Tested-by: BuildkiteCI
Reviewed-by: Profpatsch <mail@profpatsch.de>
Decoders are implemented not directly on output types, but on trivial
proxy types, so that we can easily combine those into a decoder, and
then the associated type is the actual return value of the decoder.
Change-Id: Ibce98fa09fc944e02ab327112ec7ffbc09815830
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2455
Tested-by: BuildkiteCI
Reviewed-by: Profpatsch <mail@profpatsch.de>
Most tools end by execing into their argv, so here’s a small rust
function which does the boilerplate.
Change-Id: I9748955cf53828e02f04d7e8d74fbaf10c1158b5
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2453
Tested-by: BuildkiteCI
Reviewed-by: Profpatsch <mail@profpatsch.de>
Headers should always be ASCII, so let’s crash if they are not. The
thing gets a lot easier to use, and clients who fail this restriction
can just fuck off.
Also actually print the results to stdout instead of stderr …
Change-Id: I782c96c537ae11b541175e96453c4114e0a71b05
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2451
Tested-by: BuildkiteCI
Reviewed-by: Profpatsch <mail@profpatsch.de>
arglib is the simple idea of passing structured data via a
conventional environment variable instead of implementing an optparser
for every little tool.
Pop the envvar, decode the contents, return the contents.
Change-Id: Ie44148293a58aae9a0a613895176227d43b491bb
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2449
Tested-by: BuildkiteCI
Reviewed-by: Profpatsch <mail@profpatsch.de>
reads a http request or response from stdin, and parses its headers
into a netencoded record.
Darn rust code took way too long to write.
Change-Id: Ie99faa6d4bbd4996fa4e43fb119a11d85b611c99
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2447
Reviewed-by: Profpatsch <mail@profpatsch.de>
Tested-by: BuildkiteCI
Basically what you expect, strings to text, ints to 64-bit integers,
attrs and lists to nested records and lists.
Change-Id: I9d3d841f32ab32a152cd61522f02ebde4a9b11d3
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2444
Reviewed-by: Profpatsch <mail@profpatsch.de>
Tested-by: BuildkiteCI
Apparently HashMap and Vec already do internal boxing, so the extra
indirection in the value isn’t needed.
Then, in order to make things uniform, move the boxing of `Sum` into
the `Tag` value. No extra boxing in the recursion! \o/
Change-Id: Ic21d2e3e6ac0c6e1f045bf2c9d3e9c5af446fcff
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2443
Reviewed-by: Profpatsch <mail@profpatsch.de>
Tested-by: BuildkiteCI
Uses inotify to watch a file and print when it is modified, so we can
update the parser and display the sexp on the terminal.
Now the setup is good enough to start experiementing with queries on
the syntax tree.
Change-Id: I091587fc495ff627c79a69a52915aaaa8c51fcd2
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2411
Tested-by: BuildkiteCI
Reviewed-by: Profpatsch <mail@profpatsch.de>
Uses the rust library to set up a simple nix parsing expression, which
reads a nix file and prints the sexp tree.
Change-Id: I32dc9c7b39aa0f7ffa2b99348d6c2269e5fe1a6a
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2402
Tested-by: BuildkiteCI
Reviewed-by: Profpatsch <mail@profpatsch.de>
Running this after a codified refactor acts as a good smoke test,
if a big subset of packages is broken or any central packages are
broken, this should find them quite quickly, thanks to randomness™.
Just let it run for a few minutes and check the errors that pop up.
Change-Id: I1505dd31ca25b29254474a15cd6cb71d9743038a
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2346
Tested-by: BuildkiteCI
Reviewed-by: Profpatsch <mail@profpatsch.de>
Reviewed-by: lukegb <lukegb@tvl.fyi>
This is in order to advance the rewriting from stdenv.lib to lib.
https://github.com/NixOS/nixpkgs/issues/108938
The hard part about changing the argument is that a package might not
include lib in its arguments, which is why I use hnix to check whether
lib is included and add it to the import list if it doesn’t already
exist there.
So far, only the really common pattern of
meta = with stdenv.lib;
is rewritten.
Change-Id: I370f0a321b0e5a5bd21ec21fc7cefdd65ec845ed
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2345
Tested-by: BuildkiteCI
Reviewed-by: Profpatsch <mail@profpatsch.de>
A little executable, combining the netencode and mustache libraries to
make easy templating from the command line possible.
Combined with the nix netencode generators, it’s now trivial to
populate a mustache template with (nearly) arbitrary data.
Yay.
Change-Id: I5b892c38fbc33dd826a26174dd9567f0b72e6322
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2320
Reviewed-by: Profpatsch <mail@profpatsch.de>
Tested-by: BuildkiteCI
The netencode standard, a no-nonsense extension of netstrings for
structured data.
Includes a nix generator module and a rust parsing library.
Imported from
e409df3861/pkgs/profpatsch/netencode
Original license GPLv3, but I’m the sole author, so I transfer it to
whatever license depot uses.
Change-Id: I4f6fa97120a0fd861eeef35085a3dd642ab7c407
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2319
Tested-by: BuildkiteCI
Reviewed-by: Profpatsch <mail@profpatsch.de>
A bunch of writer functions wrapping the `buildRustCrate`
functionality of nixpkgs. Can be used to write inline rust code, or
rust code read from files with `builtins.readFile`.
Change-Id: I9d74e9381b858b485925e4dc3fbb7fc392877c0a
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2318
Reviewed-by: tazjin <mail@tazj.in>
Reviewed-by: Profpatsch <mail@profpatsch.de>
Tested-by: BuildkiteCI
Simple helper function to generate a netstring that is a list of
key-value pairs, to serialize a nix dict. Also adds a python lib to
read the serialized form into a dict again.
Change-Id: I306c0cfd51640c0658d32c8d3a4f3d332ba448f0
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2315
Tested-by: BuildkiteCI
Reviewed-by: Profpatsch <mail@profpatsch.de>
Uses the new restrict type to make sure flake errors start with an E.
Change-Id: I30369ade28e1ef612c91a368de2d5b128e6cf2a9
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2313
Tested-by: BuildkiteCI
Reviewed-by: Profpatsch <mail@profpatsch.de>
This is a reexport of nixpkgs.writers.writePython3, but the libraries
are passed the package set, like with other writers.
Change-Id: Ia5a2ed1b6b329700836a8575d2bde768bf64fb31
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2311
Tested-by: BuildkiteCI
Reviewed-by: Profpatsch <mail@profpatsch.de>
Smol writer to create a python lib directly from a nix string.
The resulting library can be consumed by the writePython3 writer.
Change-Id: Id3d793564d230b38a08f65140bda4287285e1a72
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2310
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
If there was no parent, the while loop would try to get the parent of
a `nil`, which crashes and burns.
We now also ignore any non-named parents; this might be unnecessary,
if tree-sitter parent nodes are always named, but I don’t know that at
the moment and it’s not documented very well, so better safe than
sorry.
Change-Id: Ia72ee9241b885ab312f8ecf7a8fbfece7eea8f1b
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2263
Reviewed-by: Profpatsch <mail@profpatsch.de>
Tested-by: BuildkiteCI
Always goes to the first child for now.
Change-Id: I1d00b2f2013ba7e5f88622d1de3c99500e5f1a7a
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2261
Reviewed-by: Profpatsch <mail@profpatsch.de>
Tested-by: BuildkiteCI
