anchor.diff:  ** \return The value of the env variable 'name' if it exists, 'default' otherwise
   */
   public func read(cref name: string, cref default: string): ref string
  -	-> new string(pod: !!yuni.env.read(name.pod, default.pod));
  +	-> new string(pod: !!nanyc.env.read(name.pod, default.pod));
   
   
   /*!
  
positive.code: ** \return The value as a flag of the env variable 'name' if it exists, 'default' otherwise
  */
  public func read(cref asi64: string): ref i64
  	-> new i64(!!yuni.env.asi64(asi64.pod, 0__i64));
  
  /*!
  ** \brief Read the value of an environment variable as signed 64bits integer
  
negative.code: ** \param value The new value
  */
  public func set(cref name: string, cref flag: bool)
  	-> !!nanyc.env.set(name.pod, (if flag then "1" else "0").pod);
  
  
  /*!
  