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Discover if it's normal to encounter missing system dependencies when running `cargo build` after upgrading your Ubuntu. Learn how to manage Rust project dependencies effectively.
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Navigating Dependency Issues After Your OS Upgrade: A Rust Developer's Guide

Upgrading your operating system can be a refreshing experience, but it can also come with unexpected challenges—especially when it comes to software development. Recently, after upgrading to Ubuntu 20.04, many Rust developers have reported running into several missing system dependencies when executing the command cargo build for their projects. If you've encountered similar issues, you may be wondering if this is a common occurrence or if there’s something wrong with your setup. Let's dive into this challenge and tackle it step by step.

Understanding the Issue

After an OS upgrade, you may find that specific libraries or tools required by your Rust project are missing. This is particularly true if you are new to Rust and haven't encountered such requirements before. Here are some key points to consider:

Cargo and System Dependencies: cargo, Rust’s package manager, often relies on external system dependencies that your project might require. These dependencies can include libraries for graphics, database connections, and more.

Upgrading the OS: The upgrade process may remove some libraries or packages, or it might not restore them after a new installation.

What You Might Encounter

When running cargo build, you might see messages indicating that you're missing several system dependencies, such as:

cmake

x11

expat

openssl-dev

freetype2

sqlite3

This is a normal part of the transition and indicates that your project has external dependencies beyond what’s provided by default.

Why Is This Normal?

Project-Specific Requirements: Each Rust project varies in its requirements. While the package build-essential covers basic C and C+ + build tools, it does not include every library your project may need. Many projects require additional software packages or libraries that must be installed manually.

Dependency Management: It's not uncommon for projects to include dependencies on various libraries that are commonly used in programming (like graphics libraries or database libraries). If these aren't included in the core set of installed packages, cargo will prompt you to install them.

How to Solve the Problem

1. Install Missing Dependencies

To resolve the issues you're facing, you’ll need to install the required dependencies manually. Here’s how you can do that:

Open your terminal.

Use the following command to install the missing components:

[[See Video to Reveal this Text or Code Snippet]]

This command includes all the dependencies you may encounter, but make sure to adjust it based on what you specifically need for your project.

2. Double-Check Your Build Environment

Ensure your build environment is clean and organized following your OS upgrade. Things to check include:

Make sure that your Rust toolchain is properly set up.

Verify that cargo is in your PATH environment variable.

If you're using a version manager like rustup, confirm it’s correctly configured.

3. Consult the Documentation

If you run into additional dependency issues, consulting the documentation for specific libraries or Rust crates you’re using can provide guidance on what additional packages may be required.

Conclusion

Running into missing system dependencies when executing cargo build after an OS upgrade is a common scenario, especially for new Rust developers. By understanding the underlying reasons and following these steps to install the necessary packages, you can quickly get your project back on track. Embrace the learning opportunity, and remember that managing dependencies is a crucial part of a dev