lux_cli/
shell.rs

1use clap::Args;
2use eyre::{eyre, Result, WrapErr};
3use lux_lib::{
4    config::Config, lua_installation::LuaInstallation, path::Paths, progress::MultiProgress,
5    tree::InstallTree,
6};
7use which::which;
8
9use std::{env, path::PathBuf};
10use tokio::process::Command;
11
12use super::workspace::current_workspace_or_user_tree;
13
14#[derive(Args)]
15pub struct Shell {
16    /// Add test dependencies to the shell's paths,{n}
17    /// in addition to the regular dependencies.
18    #[arg(long)]
19    test: bool,
20
21    /// Add *only* build dependencies to the shell's paths.
22    #[arg(long, conflicts_with = "test")]
23    build: bool,
24
25    /// Disable the Lux loader.{n}
26    /// If a rock has conflicting transitive dependencies,{n}
27    /// disabling the Lux loader may result in the wrong modules being loaded.{n}
28    #[arg(long)]
29    no_loader: bool,
30}
31
32pub async fn shell(data: Shell, config: Config) -> Result<()> {
33    if env::var("LUX_SHELL").is_ok_and(|lx_shell_var| lx_shell_var == "1") {
34        return Err(eyre!("Already in a Lux shell."));
35    }
36
37    let tree = current_workspace_or_user_tree(&config)?;
38
39    let path = if data.build {
40        let build_tree_path = tree.build_tree(&config)?;
41        Paths::new(&build_tree_path)?
42    } else {
43        let mut path = Paths::new(&tree)?;
44        if data.test {
45            let test_tree_path = tree.test_tree(&config)?;
46            let test_path = Paths::new(&test_tree_path)?;
47            path.prepend(&test_path);
48        }
49        path
50    };
51
52    let shell: PathBuf = match env::var("SHELL") {
53        Ok(val) => PathBuf::from(val),
54        Err(_) => {
55            #[cfg(any(target_os = "linux", target_os = "android"))]
56            let fallback = which("bash").wrap_err("Cannot find `bash` on your system!")?;
57
58            #[cfg(target_os = "windows")]
59            let fallback = which("cmd.exe").wrap_err("Cannot find `cmd.exe` on your system!")?;
60
61            #[cfg(target_os = "macos")]
62            let fallback = which("zsh").wrap_err("Cannot find `zsh` on your system!")?;
63
64            fallback
65        }
66    };
67
68    let lua_path = path.package_path_prepended();
69    let lua_cpath = path.package_cpath_prepended();
70
71    let lua_init = if data.no_loader {
72        None
73    } else if tree.version().lux_lib_dir().is_none() {
74        eprintln!(
75            "⚠️ WARNING: lux-lua library not found.
76    Cannot use the `lux.loader`.
77    To suppress this warning, set the `--no-loader` option.
78                    "
79        );
80        None
81    } else {
82        Some(path.init())
83    };
84
85    let lua_version = tree.version();
86
87    let mut bin_path = path.path_prepended();
88
89    let progress = MultiProgress::new_arc(&config);
90    let bar = progress.map(|progress| progress.new_bar());
91    let lua = LuaInstallation::new(lua_version, &config, &bar).await?;
92    bar.map(|bar| bar.finish_and_clear());
93    if let Some(lua_bin_path) = lua.bin().as_ref().and_then(|lua_bin| lua_bin.parent()) {
94        bin_path.add_path(lua_bin_path.to_path_buf());
95    }
96
97    let _ = Command::new(&shell)
98        .env("PATH", bin_path.joined())
99        .env("LUA_PATH", lua_path.joined())
100        .env("LUA_CPATH", lua_cpath.joined())
101        .env("LUA_INIT", lua_init.unwrap_or_default())
102        .env("LUX_SHELL", "1")
103        .spawn()?
104        .wait()
105        .await?;
106
107    Ok(())
108}
lux_cli/shell.rs

lux_cli/
shell.rs
