Struct Requirement 

pub struct Requirement {
    pub name: String,
    pub specifier: Option<String>,
    pub extras: Vec<String>,
    pub marker: Option<String>,
    pub url: Option<String>,
}

A PEP 508 dependency requirement

Fields

name: String

Package name

specifier: Option<String>

Version specifiers (e.g., “>=1.0,<2.0”)

extras: Vec<String>

Extras (e.g., [dev, test])

marker: Option<String>

Environment markers (e.g., python_version >= “3.8”)

url: Option<String>

URL for direct references

Implementations

impl Requirement

pub fn new(name: impl Into<String>) -> Self

Create a simple requirement with just a name

pub fn parse(s: &str) -> Result<Self, Error>

Parse a PEP 508 requirement string Format: name[extras] specifier ; markers Examples:

• “requests”
• “requests>=2.0”
• “requests[security]>=2.0”
• “requests>=2.0 ; python_version >= ‘3.8’”
• “PySocks!=1.5.7,>=1.5.6; extra == ‘socks’”

pub fn with_extra(self, extra: impl Into<String>) -> Self

Add an extra

pub fn with_specifier(self, specifier: impl Into<String>) -> Self

Set the version specifier

pub fn with_marker(self, marker: impl Into<String>) -> Self

Set the environment marker

Trait Implementations

impl Clone for Requirement

fn clone(&self) -> Requirement

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Requirement

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Requirement

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for Requirement

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for Requirement

fn eq(&self, other: &Requirement) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for Requirement

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for Requirement

impl StructuralPartialEq for Requirement