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feat(python): Smarter python binary usage (#1947)
Update the python module to try multiple python binaries when determining the version. With the new logic if starship doesn't find `python` on the `PATH`, which is the default for some Linux Distros, it will fallback to `python3` and then `python2`.
This commit is contained in:
Thomas O'Donnell
GitHub
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abfe4324e0
commit
cf8a6d0738
@ -2010,16 +2010,34 @@ The module will be shown if any of the following conditions are met:
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### Options
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| Option | Default | Description |
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| -------------------- | ----------------------------------------------------------------------- | ----------------------------------------------------------------------------- |
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| -------------------- | ----------------------------------------------------------------------- | -------------------------------------------------------------------------------------- |
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| `format` | `'via [${symbol}${pyenv_prefix}${version}( \($virtualenv\))]($style) '` | The format for the module. |
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| `symbol` | `"🐍 "` | A format string representing the symbol of Python |
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| `style` | `"yellow bold"` | The style for the module. |
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| `pyenv_version_name` | `false` | Use pyenv to get Python version |
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| `pyenv_prefix` | `pyenv ` | Prefix before pyenv version display, only used if pyenv is used |
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| `scan_for_pyfiles` | `true` | If false, Python files in the current directory will not show this module. |
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| `python_binary` | `python` | Configures the python binary that Starship executes when getting the version. |
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| `python_binary` | `["python", "python3, "python2"]` | Configures the python binaries that Starship should executes when getting the version. |
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| `disabled` | `false` | Disables the `python` module. |
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::: tip
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The `python_binary` variable accepts either a string or a list of strings.
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Starship will try executing each binary until it gets a result. Note you can
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only change the binary that Starship executes to get the version of Python not
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the arguments that are used.
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The default values and order for `python_binary` was chosen to first identify
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the Python version in a virtualenv/conda environments (which currently still
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add a `python`, no matter if it points to `python3` or `python2`). This has the
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side effect that if you still have a system Python 2 installed, it may be
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picked up before any Python 3 (at least on Linux Distros that always symlink
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`/usr/bin/python` to Python 2). If you do not work with Python 2 anymore but
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cannot remove the system Python 2, changing this to `"python3"` will hide any
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Python version 2, see example below.
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:::
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### Variables
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| Variable | Example | Description |
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@ -2041,15 +2059,11 @@ symbol = "👾 "
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pyenv_version_name = true
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```
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Using the `python3` binary to get the version.
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Note - The `python_binary` variable changes the binary that Starship executes
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to get the version of Python, it doesn't change the arguments that are used.
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```toml
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# ~/.config/starship.toml
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[python]
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# Only use the `python3` binary to get the version.
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python_binary = "python3"
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```
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@ -1,4 +1,4 @@
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use crate::config::{ModuleConfig, RootModuleConfig};
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use crate::config::{ModuleConfig, RootModuleConfig, VecOr};
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use starship_module_config_derive::ModuleConfig;
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@ -6,7 +6,7 @@ use starship_module_config_derive::ModuleConfig;
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pub struct PythonConfig<'a> {
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pub pyenv_version_name: bool,
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pub pyenv_prefix: &'a str,
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pub python_binary: &'a str,
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pub python_binary: VecOr<&'a str>,
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pub scan_for_pyfiles: bool,
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pub format: &'a str,
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pub style: &'a str,
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@ -19,7 +19,7 @@ impl<'a> RootModuleConfig<'a> for PythonConfig<'a> {
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PythonConfig {
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pyenv_version_name: false,
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pyenv_prefix: "pyenv ",
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python_binary: "python",
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python_binary: VecOr(vec!["python", "python3", "python2"]),
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scan_for_pyfiles: true,
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format: "via [${symbol}${pyenv_prefix}${version}( \\($virtualenv\\))]($style) ",
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style: "yellow bold",
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@ -45,7 +45,11 @@ pub fn module<'a>(context: &'a Context) -> Option<Module<'a>> {
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let python_version = if config.pyenv_version_name {
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utils::exec_cmd("pyenv", &["version-name"])?.stdout
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} else {
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let version = get_python_version(&config.python_binary)?;
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let version = config
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.python_binary
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.0
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.iter()
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.find_map(|binary| get_python_version(binary))?;
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format_python_version(&version)
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};
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let virtual_env = get_python_virtual_env(context);
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@ -164,6 +168,7 @@ mod tests {
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check_python2_renders(&dir, None);
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check_python3_renders(&dir, None);
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check_pyenv_renders(&dir, None);
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check_multiple_binaries_renders(&dir, None);
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dir.close()
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}
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@ -175,6 +180,7 @@ mod tests {
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check_python2_renders(&dir, None);
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check_python3_renders(&dir, None);
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check_pyenv_renders(&dir, None);
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check_multiple_binaries_renders(&dir, None);
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dir.close()
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}
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@ -186,6 +192,7 @@ mod tests {
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check_python2_renders(&dir, None);
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check_python3_renders(&dir, None);
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check_pyenv_renders(&dir, None);
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check_multiple_binaries_renders(&dir, None);
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dir.close()
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}
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@ -197,6 +204,7 @@ mod tests {
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check_python2_renders(&dir, None);
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check_python3_renders(&dir, None);
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check_pyenv_renders(&dir, None);
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check_multiple_binaries_renders(&dir, None);
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dir.close()
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}
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@ -208,6 +216,7 @@ mod tests {
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check_python2_renders(&dir, None);
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check_python3_renders(&dir, None);
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check_pyenv_renders(&dir, None);
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check_multiple_binaries_renders(&dir, None);
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dir.close()
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}
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@ -219,6 +228,7 @@ mod tests {
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check_python2_renders(&dir, None);
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check_python3_renders(&dir, None);
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check_pyenv_renders(&dir, None);
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check_multiple_binaries_renders(&dir, None);
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dir.close()
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}
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@ -230,6 +240,7 @@ mod tests {
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check_python2_renders(&dir, None);
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check_python3_renders(&dir, None);
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check_pyenv_renders(&dir, None);
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check_multiple_binaries_renders(&dir, None);
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dir.close()
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}
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@ -241,6 +252,7 @@ mod tests {
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check_python2_renders(&dir, None);
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check_python3_renders(&dir, None);
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check_pyenv_renders(&dir, None);
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check_multiple_binaries_renders(&dir, None);
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dir.close()
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}
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@ -269,6 +281,7 @@ mod tests {
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let config = toml::toml! {
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[python]
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python_binary = "python2"
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scan_for_pyfiles = false
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};
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@ -289,6 +302,14 @@ mod tests {
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scan_for_pyfiles = false
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};
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check_pyenv_renders(&dir, Some(config_pyenv));
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let config_multi = toml::toml! {
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[python]
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python_binary = ["python", "python3"]
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scan_for_pyfiles = false
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};
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check_multiple_binaries_renders(&dir, Some(config_multi));
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dir.close()
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}
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@ -303,7 +324,7 @@ mod tests {
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let expected = Some(format!(
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"via {} ",
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Color::Yellow.bold().paint("🐍 v2.7.17 (my_venv)")
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Color::Yellow.bold().paint("🐍 v3.8.0 (my_venv)")
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));
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assert_eq!(actual, expected);
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@ -321,7 +342,7 @@ mod tests {
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let expected = Some(format!(
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"via {} ",
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Color::Yellow.bold().paint("🐍 v2.7.17 (my_venv)")
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Color::Yellow.bold().paint("🐍 v3.8.0 (my_venv)")
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));
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assert_eq!(actual, expected);
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@ -348,7 +369,7 @@ prompt = 'foo'
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let expected = Some(format!(
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"via {} ",
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Color::Yellow.bold().paint("🐍 v2.7.17 (foo)")
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Color::Yellow.bold().paint("🐍 v3.8.0 (foo)")
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));
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assert_eq!(actual, expected);
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@ -358,7 +379,7 @@ prompt = 'foo'
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fn check_python2_renders(dir: &tempfile::TempDir, starship_config: Option<toml::Value>) {
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let config = starship_config.unwrap_or(toml::toml! {
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[python]
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python_binary = "python"
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python_binary = "python2"
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});
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let actual = ModuleRenderer::new("python")
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@ -385,6 +406,24 @@ prompt = 'foo'
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assert_eq!(expected, actual);
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}
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fn check_multiple_binaries_renders(
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dir: &tempfile::TempDir,
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starship_config: Option<toml::Value>,
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) {
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let config = starship_config.unwrap_or(toml::toml! {
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[python]
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python_binary = ["python", "python3"]
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});
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let actual = ModuleRenderer::new("python")
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.path(dir.path())
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.config(config)
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.collect();
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let expected = Some(format!("via {} ", Color::Yellow.bold().paint("🐍 v3.8.0")));
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assert_eq!(expected, actual);
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}
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fn check_pyenv_renders(dir: &tempfile::TempDir, starship_config: Option<toml::Value>) {
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let config = starship_config.unwrap_or(toml::toml! {
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[python]
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@ -137,7 +137,8 @@ active boot switches: -d:release\n",
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stdout: String::from("system\n"),
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stderr: String::default(),
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}),
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"python --version" => Some(CommandOutput {
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"python --version" => None,
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"python2 --version" => Some(CommandOutput {
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stdout: String::default(),
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stderr: String::from("Python 2.7.17\n"),
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}),
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