shelless-utils/chainexec
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Oystein Kristoffer Tveit
2025-10-16 22:53:27 +09:00
commit 8d505c6fea
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1
.envrc Normal file
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use flake

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.gitignore vendored Normal file
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/target
result

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Cargo.lock generated Normal file
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# This file is automatically @generated by Cargo.
# It is not intended for manual editing.
version = 4
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Cargo.toml Normal file
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[package]
name = "chainexec"
version = "0.1.0"
edition = "2024"
license = "MIT"
authors = ["h7x4@nani.wtf"]
readme = "README.md"
[dependencies]
clap = { version = "4.5.49", features = ["derive"] }
clap_complete = "4.5.59"
[profile.release]
strip = true
lto = true
codegen-units = 1

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LICENSE Normal file
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MIT License
Copyright (c) 2025 h7x4 <h7x4@nani.wtf>
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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README.md Normal file
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# chainexec
> [!CAUTION]
> This software is not finished
This is a utility for chaining multiple commands without use of a shell.
It is meant as a replacement for shells in the cases where you are running multiple commands with `&&`, `||`, `|`, `|&` or `;`, or otherwise redirecting stdin/stdout/stderr.

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default.nix Normal file
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{
lib
, rustPlatform
}:
let
cargoToml = builtins.fromTOML (builtins.readFile ./Cargo.toml);
in
rustPlatform.buildRustPackage {
pname = cargoToml.package.name;
version = cargoToml.package.version;
src = builtins.filterSource (path: type: let
baseName = baseNameOf (toString path);
in !(lib.any (b: b) [
(!(lib.cleanSourceFilter path type))
(type == "directory" && lib.elem baseName [
".direnv"
".git"
"target"
"result"
])
(type == "regular" && lib.elem baseName [
"flake.nix"
"flake.lock"
"default.nix"
"module.nix"
".envrc"
])
])) ./.;
cargoLock.lockFile = ./Cargo.lock;
meta = with lib; {
license = licenses.mit;
maintainers = with maintainers; [ h7x4 ];
platforms = platforms.unix;
mainProgram = "chainexec";
};
}

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flake.lock generated Normal file
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{
"nodes": {
"nixpkgs": {
"locked": {
"lastModified": 1760284886,
"narHash": "sha256-TK9Kr0BYBQ/1P5kAsnNQhmWWKgmZXwUQr4ZMjCzWf2c=",
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "cf3f5c4def3c7b5f1fc012b3d839575dbe552d43",
"type": "github"
},
"original": {
"owner": "NixOS",
"ref": "nixos-unstable",
"repo": "nixpkgs",
"type": "github"
}
},
"root": {
"inputs": {
"nixpkgs": "nixpkgs",
"rust-overlay": "rust-overlay"
}
},
"rust-overlay": {
"inputs": {
"nixpkgs": [
"nixpkgs"
]
},
"locked": {
"lastModified": 1760323082,
"narHash": "sha256-SKhC9tyt+gVgQHnZGMVPSdptlDYNqApT56JF5t8RwBY=",
"owner": "oxalica",
"repo": "rust-overlay",
"rev": "c73e6874fe8dce0bab82c0387b510875f1eff9f8",
"type": "github"
},
"original": {
"owner": "oxalica",
"repo": "rust-overlay",
"type": "github"
}
}
},
"root": "root",
"version": 7
}

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flake.nix Normal file
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{
inputs = {
nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
rust-overlay.url = "github:oxalica/rust-overlay";
rust-overlay.inputs.nixpkgs.follows = "nixpkgs";
};
outputs = { self, nixpkgs, rust-overlay }:
let
inherit (nixpkgs) lib;
systems = [
"x86_64-linux"
"aarch64-linux"
"x86_64-darwin"
"aarch64-darwin"
];
forAllSystems = f: lib.genAttrs systems (system: let
pkgs = import nixpkgs {
inherit system;
overlays = [
(import rust-overlay)
];
};
rust-bin = rust-overlay.lib.mkRustBin { } pkgs.buildPackages;
toolchain = rust-bin.stable.latest.default.override {
extensions = [ "rust-src" "rust-analyzer" "rust-std" ];
};
in f system pkgs toolchain);
in {
devShells = forAllSystems (system: pkgs: toolchain: {
default = pkgs.mkShell {
nativeBuildInputs = [
toolchain
pkgs.cargo-edit
];
RUST_SRC_PATH = "${toolchain}/lib/rustlib/src/rust/library";
};
});
overlays = {
default = self.overlays.chainexec;
chainexec = final: prev: {
inherit (self.packages.${prev.system}) chainexec;
};
};
packages = forAllSystems (system: pkgs: _: {
default = self.packages.${system}.chainexec;
chainexec = pkgs.callPackage ./default.nix { };
});
};
}

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src/main.rs Normal file
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use clap::Parser;
#[derive(Parser, Debug)]
#[command(author, version, about, long_about = None)]
struct Args {
/// Enable pipefail
#[arg(short, long)]
pipefail: bool,
}
// TODO:
// Allow arbitrarily nested combinations of chaining commands
// Should support the following combinators:
// &&
// ||
// |
// |& (2>&1 |)
// ;
// !
// ( )
// <(command) and </file should also be supported somehow
// Ensure that input and output is streamed correctly
fn main() -> Result<(), Box<dyn std::error::Error>> {
let args = Args::parse();
Ok(())
}