From c6605992c06bf6adc93a7bb19b0ed34b8c213bf3 Mon Sep 17 00:00:00 2001 From: Florian Klink Date: Tue, 16 Jan 2024 21:14:38 +0200 Subject: feat(tvix/glue): drive builds on IO MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit That's one possible abstraction to drive builds. Whenever IO into a store path is requested, we look up the root node, and in case we don't have it in PathInfoService, but KnownPaths gives us a Derivation for that output path, trigger a build and await the result. This recursively might trigger builds for parent paths if they haven't been built yet. Another option would be to simply expose a PathInfoService interface for a builder too, and loop all building into IO via PathInfoService composition - but let's start with something. Note tvix-cli doesn't have a configurable BuildService yet, it's plugged to the DummyBuildService, so whenever it needs to do a build, it'll fail, but that's how it can be provoked: ``` (builtins.readFile (import {}).hello.outPath + "/bin/hello") […] error[E029]: I/O error: /nix/store/cg8a576pz2yfc1wbhxm1zy4x7lrk8pix-hello-2.12.1: builds are not supported with DummyBuildService --> [code]:1:2 | 1 | (builtins.readFile (import {}).hello.outPath + "/bin/hello") | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ``` Note how this fails, while pure output path calculation (`(import {}).hello.outPath + "/bin/hello")`) still succeeds. Change-Id: Id2075d8a2b18554d0dd608b4b29146a8cd411e7f Reviewed-on: https://cl.tvl.fyi/c/depot/+/10793 Reviewed-by: raitobezarius Tested-by: BuildkiteCI --- tvix/glue/Cargo.toml | 2 ++ 1 file changed, 2 insertions(+) (limited to 'tvix/glue/Cargo.toml') diff --git a/tvix/glue/Cargo.toml b/tvix/glue/Cargo.toml index 748635f3940d..bce4556704b6 100644 --- a/tvix/glue/Cargo.toml +++ b/tvix/glue/Cargo.toml @@ -4,9 +4,11 @@ version = "0.1.0" edition = "2021" [dependencies] +async-recursion = "1.0.5" bstr = "1.6.0" bytes = "1.4.0" data-encoding = "2.3.3" +futures = "0.3.30" nix-compat = { path = "../nix-compat" } tvix-build = { path = "../build", default-features = false, features = []} tvix-eval = { path = "../eval" } -- cgit 1.4.1