Failing to read env field

[djkato]

According to #65 env files should work with combination from dotenvy, but they don't seem to for me.

env file:
.env

REQUIRED_SALEOR_VERSION=">=3.11.7<4"
SALEOR_APP_ID="dummy-saleor-app-rs"
APP_API_BASE_URL="http://localhost:8000/graphql/"
APL="redis"
APL_URL="redis://redis:6379/2"
LOG_LEVEL="DEBUG"

running:
config.rs

use crate::saleor::AplType;
use tracing::Level;

#[derive(Debug, Deserialize)]
#[serde(remote = "Level")]
pub enum LocalTracingLevel {
    TRACE,
    DEBUG,
    INFO,
    WARN,
    ERROR,
}

#[derive(Deserialize, Debug)]
#[serde(rename_all = "SCREAMING_SNAKE_CASE")]
pub struct Config {
    pub required_saleor_version: String,
    pub saleor_app_id: String,
    pub app_api_base_url: String,
    pub apl: AplType,
    pub apl_url: String,
    #[serde(with = "LocalTracingLevel")]
    pub log_level: tracing::Level,
}

impl Config {
    pub fn load() -> Result<Self, envy::Error> {
        dotenvy::dotenv().unwrap();

        for (key, value) in std::env::vars() {
            println!("{key}: {value}");
        }
        let env = envy::from_env::<Config>();
        dbg!(&env);
        env
    }
}

Error/stdout:

REQUIRED_SALEOR_VERSION: >=3.11.7<4
SALEOR_APP_ID: dummy-saleor-app-rs
APP_API_BASE_URL: http://localhost:8000/graphql/
APL: redis
APL_URL: redis://redis:6379/2
LOG_LEVEL: DEBUG
[src/config.rs:36:9] &env = Err(
    MissingValue(
        "REQUIRED_SALEOR_VERSION",
    ),
)
Error: missing value for field REQUIRED_SALEOR_VERSION

[djkato]

#[serde(rename_all = "SCREAMING_SNAKE_CASE")]

This seems to have been the culprit.

[jeffrey-dot-li]

Its because envy converts all field names to lowercase for some reason?

impl<Iter: Iterator<Item = (String, String)>> Iterator for Vars<Iter> {
    type Item = (VarName, Val);

    fn next(&mut self) -> Option<Self::Item> {
        self.0
            .next()
            .map(|(k, v)| (VarName(k.to_lowercase()), Val(k, v)))
    }
}

Is this somewhere in the documentation?