feat(tvix): set up a simple command line parser for nix-store
We are going to have a 1:1 drop-in replacement for the old-style nix tools, and this starts implementing the cli parser part. The first step is to have a simple integration test suite that can verify that we match the nix CLI. clap is a super complicated parsing library, but looking through the rest they are either too opinioated to be of use for us, or depend on clap as implementation. Change-Id: I4cf6051f3a4f782c3242fd0d2b9eab3fbe33d8ad Reviewed-on: https://cl.tvl.fyi/c/depot/+/4756 Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su> Autosubmit: Profpatsch <mail@profpatsch.de>
This commit is contained in:
Profpatsch
clbot
parent
7c92b07efd
commit
80defc2101
3 changed files with 347 additions and 2 deletions
241
tvix/Cargo.lock
generated
241
tvix/Cargo.lock
generated
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@ -2,6 +2,247 @@
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# It is not intended for manual editing.
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version = 3
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[[package]]
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name = "atty"
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version = "0.2.14"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "d9b39be18770d11421cdb1b9947a45dd3f37e93092cbf377614828a319d5fee8"
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dependencies = [
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"hermit-abi",
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"libc",
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"winapi",
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]
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[[package]]
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name = "autocfg"
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version = "1.0.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "cdb031dd78e28731d87d56cc8ffef4a8f36ca26c38fe2de700543e627f8a464a"
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[[package]]
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name = "bitflags"
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version = "1.3.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
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[[package]]
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name = "cfg-if"
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version = "1.0.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
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[[package]]
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name = "clap"
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version = "3.0.5"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "f6f34b09b9ee8c7c7b400fe2f8df39cafc9538b03d6ba7f4ae13e4cb90bfbb7d"
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dependencies = [
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"atty",
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"bitflags",
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"indexmap",
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"os_str_bytes",
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"strsim",
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"termcolor",
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"textwrap",
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]
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[[package]]
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name = "getrandom"
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version = "0.2.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "7fcd999463524c52659517fe2cea98493cfe485d10565e7b0fb07dbba7ad2753"
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dependencies = [
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"cfg-if",
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"libc",
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"wasi",
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]
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[[package]]
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name = "hashbrown"
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version = "0.11.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "ab5ef0d4909ef3724cc8cce6ccc8572c5c817592e9285f5464f8e86f8bd3726e"
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[[package]]
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name = "hermit-abi"
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version = "0.1.19"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "62b467343b94ba476dcb2500d242dadbb39557df889310ac77c5d99100aaac33"
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dependencies = [
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"libc",
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]
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[[package]]
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name = "indexmap"
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version = "1.7.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "bc633605454125dec4b66843673f01c7df2b89479b32e0ed634e43a91cff62a5"
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dependencies = [
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"autocfg",
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"hashbrown",
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]
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[[package]]
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name = "libc"
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version = "0.2.112"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "1b03d17f364a3a042d5e5d46b053bbbf82c92c9430c592dd4c064dc6ee997125"
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[[package]]
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name = "memchr"
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version = "2.4.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "308cc39be01b73d0d18f82a0e7b2a3df85245f84af96fdddc5d202d27e47b86a"
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[[package]]
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name = "os_str_bytes"
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version = "6.0.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "8e22443d1643a904602595ba1cd8f7d896afe56d26712531c5ff73a15b2fbf64"
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dependencies = [
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"memchr",
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]
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[[package]]
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name = "ppv-lite86"
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version = "0.2.16"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "eb9f9e6e233e5c4a35559a617bf40a4ec447db2e84c20b55a6f83167b7e57872"
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[[package]]
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name = "rand"
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version = "0.8.4"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "2e7573632e6454cf6b99d7aac4ccca54be06da05aca2ef7423d22d27d4d4bcd8"
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dependencies = [
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"libc",
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"rand_chacha",
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"rand_core",
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"rand_hc",
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]
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[[package]]
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name = "rand_chacha"
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version = "0.3.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
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dependencies = [
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"ppv-lite86",
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"rand_core",
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]
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[[package]]
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name = "rand_core"
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version = "0.6.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "d34f1408f55294453790c48b2f1ebbb1c5b4b7563eb1f418bcfcfdbb06ebb4e7"
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dependencies = [
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"getrandom",
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]
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[[package]]
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name = "rand_hc"
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version = "0.3.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "d51e9f596de227fda2ea6c84607f5558e196eeaf43c986b724ba4fb8fdf497e7"
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dependencies = [
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"rand_core",
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]
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[[package]]
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name = "redox_syscall"
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version = "0.2.10"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "8383f39639269cde97d255a32bdb68c047337295414940c68bdd30c2e13203ff"
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dependencies = [
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"bitflags",
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]
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[[package]]
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name = "remove_dir_all"
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version = "0.5.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "3acd125665422973a33ac9d3dd2df85edad0f4ae9b00dafb1a05e43a9f5ef8e7"
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dependencies = [
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"winapi",
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]
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[[package]]
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name = "strsim"
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version = "0.10.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "73473c0e59e6d5812c5dfe2a064a6444949f089e20eec9a2e5506596494e4623"
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[[package]]
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name = "tempfile"
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version = "3.2.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "dac1c663cfc93810f88aed9b8941d48cabf856a1b111c29a40439018d870eb22"
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dependencies = [
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"cfg-if",
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"libc",
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"rand",
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"redox_syscall",
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"remove_dir_all",
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"winapi",
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]
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[[package]]
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name = "termcolor"
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version = "1.1.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "2dfed899f0eb03f32ee8c6a0aabdb8a7949659e3466561fc0adf54e26d88c5f4"
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dependencies = [
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"winapi-util",
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]
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[[package]]
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name = "textwrap"
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version = "0.14.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "0066c8d12af8b5acd21e00547c3797fde4e8677254a7ee429176ccebbe93dd80"
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[[package]]
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name = "tvix"
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version = "0.1.0"
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dependencies = [
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"clap",
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"tempfile",
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]
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[[package]]
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name = "wasi"
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version = "0.10.2+wasi-snapshot-preview1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "fd6fbd9a79829dd1ad0cc20627bf1ed606756a7f77edff7b66b7064f9cb327c6"
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[[package]]
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name = "winapi"
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version = "0.3.9"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
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dependencies = [
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"winapi-i686-pc-windows-gnu",
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"winapi-x86_64-pc-windows-gnu",
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]
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[[package]]
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name = "winapi-i686-pc-windows-gnu"
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version = "0.4.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
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[[package]]
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name = "winapi-util"
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version = "0.1.5"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "70ec6ce85bb158151cae5e5c87f95a8e97d2c0c4b001223f33a334e3ce5de178"
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dependencies = [
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"winapi",
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]
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[[package]]
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name = "winapi-x86_64-pc-windows-gnu"
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version = "0.4.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
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@ -5,6 +5,10 @@ edition = "2021"
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# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
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[dependencies.clap]
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version = "3.0.5"
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[dependencies.tempfile]
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version = "3.2.0"
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[[bin]]
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name = "nix-store"
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@ -1,3 +1,103 @@
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fn main () {
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println!("hello, nix");
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fn main() {
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main_args(std::env::args().collect()).unwrap_or_else(|e| e.exit());
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}
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pub fn main_args(args: Vec<String>) -> clap::Result<NixResult> {
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let matches = clap::App::new("nix-store")
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.subcommand(clap::App::new("--add").arg(clap::Arg::new("FILE").required(true).index(1)))
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.try_get_matches_from(args.iter())?;
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if let Some(add) = matches.subcommand_matches("--add") {
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let file = add.value_of("FILE").expect("--add needs a file");
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let file_contents =
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std::fs::read_to_string(file).expect(&format!("file {} does not exist", file));
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Ok(NixResult::FileAddedToStore {
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content: file_contents,
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})
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} else {
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panic!("read some arguments that we do not know: {:?}", args)
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}
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}
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#[derive(Debug, Eq, PartialEq)]
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pub enum NixResult {
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FileAddedToStore { content: String },
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}
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#[cfg(test)]
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mod integration_tests {
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use std::{collections::VecDeque, io::Write};
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use super::*;
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#[derive(Debug)]
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enum NixOutput {
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Err {
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status: i32,
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stdout: String,
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stderr: String,
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},
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Ok {
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stdout: String,
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stderr: String,
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},
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}
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fn run_nix_command(cmd: &str, args: Vec<String>) -> NixOutput {
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let out = std::process::Command::new(cmd)
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.args(args)
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.output()
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.expect(&format!("could not run {}", cmd));
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match out.status.code().expect("no status code!") {
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0 => NixOutput::Ok {
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stdout: String::from_utf8_lossy(&out.stdout).trim_end().to_string(),
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stderr: String::from_utf8_lossy(&out.stderr).trim_end().to_string(),
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},
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status => NixOutput::Err {
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status,
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stdout: String::from_utf8_lossy(&out.stdout).trim_end().to_string(),
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stderr: String::from_utf8_lossy(&out.stderr).trim_end().to_string(),
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},
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}
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}
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fn nix_nix_store<'a>(args: Vec<String>) -> NixResult {
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match run_nix_command("nix-store", args) {
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err @ NixOutput::Err { .. } => panic!("nix-store --add failed: {:#?}", err),
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NixOutput::Ok { stdout, .. } => NixResult::FileAddedToStore {
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content: std::fs::read_to_string(&stdout)
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.expect(&format!("cannot open {} as store file", stdout)),
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},
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}
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}
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fn tvix_nix_store<'a>(args: Vec<String>) -> NixResult {
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eprintln!("running tvix with arguments {:?}", args);
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let mut args = VecDeque::from(args);
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args.push_front("tvix-store".to_string());
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super::main_args(Vec::from(args))
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.unwrap_or_else(|e| panic!("clap command line parsing failed:\n{}", e))
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}
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#[test]
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fn test_nix_store_add() {
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let file_content = "I am a copied file";
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let mut tempfile = tempfile::NamedTempFile::new().expect("cannot create temp file");
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tempfile
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.write_all(file_content.as_bytes())
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.expect("could not write to tempfile");
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assert_eq!(
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tvix_nix_store(vec![
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"--add".to_string(),
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tempfile.path().as_os_str().to_string_lossy().into_owned()
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]),
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nix_nix_store(vec![
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"--add".to_string(),
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tempfile.path().as_os_str().to_string_lossy().into_owned()
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]),
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"added file contents were not the same"
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);
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// make sure the tempfile lives till here
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drop(tempfile)
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}
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}
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Loading…
Reference in a new issue