Silica

Silica is a static repo generator for jailbroken iOS devices developed by Shuga and supported by Ignition.

The goal behind Silica is simple: make it as easy as possible to make a personal repo that plays nicely with both Cydia and Sileo. Silica generates "static" repos, allowing for repos to be hosted on GitHub Pages for free.

Getting Started

Silica, by default, is relatively straight-forward to configure. This tutorial is going to assume that you have the following already installed on your machine:

• Python 3 (to run Silica)
• pip3 (for installing Python dependencies)
• Homebrew (macOS users only)

Silica is only officially supported on macOS and Debian-based OSes at the moment. We can not guarantee Windows support at this time. I'm sure you could get this working on other Linux distributions with a bit of tweaking, too. btw i don't use arch

Silica for Windows Subsystem for Linux (WSL)

If you are not using Windows, skip down to Dependencies.

Due to Silica requiring dpkg-deb to properly work, you cannot run Silica in native Windows. As a result, you need to set your machine up WSL and Ubuntu for Windows, which will allow for Linux programs to run in Windows via a terminal.

1. Set up WSL

Please follow this official tutorial. Please use Ubuntu for ideal results.

2. Setting up WSL for dpkg-deb

Due to how dpkg-deb handles permissions, we need to change some settings to make things work.

1. Run sudo nano /etc/wsl.conf to edit the WSL config.
2. Copy and paste the following text into the file.

[automount]
enabled = true
root = /mnt/
options = "umask=22,fmask=11"

3. Run the following command to update your umask to 0022.

echo "\numask 0022" >> ~/.bashrc

4. Open up Windows PowerShell as an administrator by right-clicking on the Windows button.

5. Run this command to restart WSL:

Get-Service LxssManager | Restart-Service

(Note: Please always run Silica through the Ubuntu program or Windows Terminal.)

(Tip courtesy of /u/zoredache on Reddit.)

3. Install dependencies

Like any Debian-based system (like Ubuntu), we need to install some dependencies before downloading Silica.

apt-get install gnupg
apt-get install git

3. Getting Silica

Now it's time to get Silica! Because of how Windows deals with line breaks, we need to download Silica via Git. If you already downloaded Silica via your web browser, delete it. We'll redownload it in a second.

Once you are in the directory you want to download Silica to, run this command:

git clone https://github.com/Shugabuga/Silica/

This will create a new folder for Silica.

4. Text Editors and line breaks

Due to how Windows deals with line breaks, if you wish to create Silica config files by hand, you need to make sure your text editor uses Unix line breaks. This varies by text editor and IDE, so look for a setting about line breaks or EOL characters and set it to Unix.

From here, you're all set for Windows-specific instructions! Now follow the Debian instructions.

Dependencies

We know that some developers will already have these dependencies installed. If you know you already have a dependency, there is no need to re-install it.

macOS users are going to want to install a couple of packages. To do so, run these commands in Terminal:

brew install dpkg
brew install gnupg

Users of Debian or its derivatives (like Ubuntu) need to run the following commands as root to install needed dependencies:

apt-get install gnupg
apt-get install git

We also use find, bzip2, and xz, but most people have these installed by default.

(Windows Subsystem for Linux users already did this step.)

Other Dependencies and Settings

Now that any needed system dependencies are installed, we need to install some Python dependencies and configure settings.json. Thankfully, the included setup.sh script handles this for you!

Run the following command and follow the on-screen prompts to set up Silica's core settings, including setting the repo name, default tint color, and whether it should automatically run Git when it finishes updating your repo. This script will also generate a key to sign the Release.gpg file which will be stored in your keyring.

./setup.sh

If this doesn't work, make sure the the file is set as an executable by running chmod +x setup.sh.

The settings you input during the installation process can be later modified in the Styles/settings.json file.

Customization

Most users would like to customize their repos to fit their needs. Everything you need to do this is in the Styles folder.

• index.mustache is the template file of the repo's main web page.
• tweak.mustache is the template file of the web depictions of the tweaks.
• index.css is a CSS file that is applied to every web page generated by Silica.
• index.js is a JavaScript file that handles version detection and tab switching on web depictions.
• settings.json is auto-generated by the setup script, but you can edit it to change your repo's name, description, default tint color, and more.
• icon.png is the repo's icon as it will display in Cydia and Sileo.
• The Generic folder includes default image assets.

Image Assets

All Silica image assets are .png files.

• The Generic folder, which contains a Banner and Icon folder, includes default assets for when a package lacks a banner or an icon. These are named after the package's section. If a section does not have its own image, it will use whatever is stored in Generic.png.
• icon.png is your repo's icon as displayed in Sileo and Cydia.

Adding Packages

Silica's Packages folder includes all the packages that will live on your repo. A folder in Packages represents an individual tweak. The name of the folder does not matter and changing it does nothing; Silica references packages via their "bundle id."

Inside of a tweak or theme's folder should include a silica_data folder (which will be elaborated on later on) and either a .deb file (useful for tweak developers) or the hierarchy of the generated package (the latter which is useful for theme designers). If a .deb file is present, it will take precedence.

The directory tree should look similar to the following. Please note how that the .deb file is in its own folder inside of Packages.:

Packages
    My Tweak
        tweak.deb
        silica_data
            index.json
            description.md
            icon.png
            banner.png
            screenshots
                01.png
                02.png
                a_screenshot.png
            scripts
                prerm
                extrainst_
    My Theme
        Library
            Themes
                MyTheme.theme
                    IconBundles
                        com.anemonetheming.anemone-large.png
        silica_data
            index.json
            description.md
            icon.png
            banner.png
            screenshots
                01.png
                02.png
                a_screenshot.png

silica_data

The silica_data folder is where the icon, description, screenshot, and other package (tweak/theme) information live. This package is not put in the final package file (the ".deb" file). The following files and folders can go in this folder:

• index.json is the only required file. It is a JSON file including information such as the bundle ID, a short tagline description, version compatibility, developer information, changelog data, and more. This file is generated by Silica using user input if it does not exist. More information on this file is in the Documentation section of this document.
• description.md is a Markdown file that houses the package's description.
• icon.png is the package's icon as it appears in depictions and in Sileo. It should be a square PNG file.
• banner.png is the package's banner as it appears in depictions and in Sileo. It should be a rectangular PNG file.
• The screenshots folder houses any screenshots you want to be displayed alongside the package.
• The scripts folder include any pre/post-installation scripts. The contents of this folder will be placed in the package's DEBIAN folder.

The index.json file, if missing, will be generated when running Silica.

Generating a Repo

Once everything is configured as you wish, run the following command to "compile" your repo.

python3 index.py

From here, Silica will automatically generate a repo and put the output in the docs folder. If a package does not have a silica_data file, you will be asked some information to help automatically generate it.

From here, a service such as GitHub Pages can be used to host the repo for free.

Hosting with GitHub Pages

Silica is designed to be used with GitHub Pages, allowing you to operate a repo for free.

There are multiple ways to go about this, but this method is recommended for those who are totally unfamiliar with git (if you can get git up and running, please use that).

1. Create a GitHub account.
2. Create a new repository. Initialize it with a README.
3. Drag-and-drop all of the contents of the docs directory to the newly-created repository.
4. Type something in the text box and click the "Commit Changes" button.
5. Go to your repository's settings and scroll down to the GitHub Pages section.
6. Set "Source" from "None" to "master branch."
7. Follow these steps to configure your domain with GitHub Pages

From there, you should be done! Your compiled repo's "source" will have to be publicly viewable if you don't have a Pro account, but that shouldn't matter too much if you only upload the docs folder to GitHub.

If you happen to have git installed on your computer and run git clone https://github.com/your_username/repository_name/, you can use "master branch /docs folder" as the site source and Silica's automatic Git pushing feature to automate the uploading process. This is recommended if you happen to have a GitHub Pro account.

Documentation

index.json

Here is a comprehensive example of an index.json file. These reside in the package's silica_data folder and is required for the repo to properly compile. You must include the bundle_id, name, version, tagline, section, works_min, and works_max. All other values are optional, but are recommended (if applicable).

{
    "bundle_id": "co.shuga.elementary-lite",
    "name": "Elementary Lite",
    "version": "1.1.2-beta",
    "tagline": "A simplistic, glyph-based theme.",
    "homepage": "https://shuga.co/repo",
    "developer": {
        "name": "Shuga",
        "email": "[email protected]"
    },
    "maintainer": {
        "name": "Shuga",
        "email": "[email protected]"
    },
    "social": [
        {
            "name": "Twitter",
            "url": "https://twitter.com/HeyItsShuga"
        },
        {
            "name": "Website",
            "url": "https://shuga.co/"
        }
    ],
    "sponsor": {
        "name": "Shuga Studios",
        "email": "[email protected]"
    },
    "section": "Themes",
    "pre_dependencies": "",
    "dependencies": "com.anemonetheming.anemone",
    "conflicts": "",
    "replaces": "",
    "provides": "",
    "other_control": ["Tag: role::enduser", "SomeOtherEntryToControl: True"],

    "tint": "#55c6d3",
    "works_min": "8.0",
    "works_max": "13.0",
    "featured": "true",
    "source": "https://github.com/Shugabuga/Silica",
    "changelog": [
        {
            "version": "1.1.2-beta",
            "changes": "Thank you for participating in the Elementary beta! All future updates will be given a descriptive changelog with a list of changes."
        }
    ]
}

settings.json

The settings.json file, located in the Styles folder, let you configure Silica as a while. Everything in this file is required except for subfolder, social, footer, and enable_pgp.

{
    "name": "Silica Beta Repo",
    "description": "A repo used to help develop the Silica static repo compiler.",
    "tint": "#2da9f3",
    "cname": "silica.shuga.co",
    "maintainer": {
        "name": "Shuga",
        "email": "[email protected]"
    },
    "social": [
        {
            "name": "Twitter",
            "url": "https://twitter.com/HeyItsShuga"
        },
        {
            "name": "Website",
            "url": "https://shuga.co/"
        }
    ],
    "automatic_git": "false",
    "subfolder": "repo",
    "footer": "{{repo_name}} Powered by Silica {{silica_version}}",
    "enable_gpg": "false"
}

Templating

The repo's home page and web-based tweak depictions can be customized using a Mustache-based templating system. If you want to customize these pages, you can use the following placeholders to extend or personalize your Silica install.

Customizing your repo is optional, but those migrating from a different repo who want to preserve the look of their old depictions may want to do this, as may those who want to push a brand identity.

index.mustache Placeholders

tweak.mustache Placeholders

File Structure

This is the structure of user-defined files and folders in Silica. Some of these, such as settings.json, may be automatically generated on set-up. Others (such as the .mustache template files) don't need to be changed if you want to use the default settings.

Packages // All tweak/theme information/data will go here, AKA what will mainly be messed with.
    [Tweak Folder]
        silica_data
            index.json // This will allow you to edit data in the generated Control file, as well as the data that web and native depictions will use (such as compatibility information and color tint; icons and screenshots are automatically dealt with.).
            description.md // A separate description file, because a one-liner in some JSON isn't any fun!
            icon.png // The package icon.
            banner.png // The header image.
            screenshots
                [Assorted images].png
            scripts
                [Everything here will be put in DEBIAN and is for pre/postinst scripts]
        [Mirror of iOS directory listing OR a .deb file]
Styles // Allows users to customize how Silica looks
    index.mustache // This controls the compiled index.html file.
    tweak.mustache // This controls the per-tweak web depictions generated.
    settings.json // This allows you to edit data in the generated Release file, maintainer links, and some other things that Sileo native depictions may need
    index.css // Stylesheet
    index.js // JavaScript
    icon.png // Repo icon.