Function sys_pkg_query 

pub fn sys_pkg_query(_name: &str) -> SyscallResult<PackageInfo>

Query information about a package by name.

Looks up the specified package in both the installed package database and the configured repositories. Returns a PackageInfo struct containing the package’s name, version, and installation status.

This is a read-only operation that does not modify the system. It can be used to check whether a package is installed, discover available versions, or retrieve metadata before performing an install or remove operation.

Arguments

• name - Name of the package to query. Searches the installed package database first, then falls back to configured repository indices.

Returns

• Ok(PackageInfo) - Package metadata including:
  • name: The canonical package name.
  • version: The installed or latest available version string (semver).
  • installed: true if the package is currently installed, false if it is only available in repositories.

Errors

• SyscallError::NotFound - The package name was not found in the installed database or any configured repository.
• SyscallError::InvalidArgument - The package name is empty or contains invalid characters.
• SyscallError::PermissionDenied - The caller lacks the capability to query package information.
• SyscallError::IoError - An I/O error occurred reading the package database or repository index.

Examples

use veridian_kernel::pkg::sdk::syscall_api::sys_pkg_query;

let info = sys_pkg_query("libveridian").expect("query failed");
if info.installed {
    // Package is installed, version info.version
} else {
    // Package is available but not installed
}