Updated version

Necessary to leverage the latest operating system version.

Milestone: major

.github/ISSUE_TEMPLATE.md

@@ -1,8 +0,0 @@
-## Why
-<!-- Required. Describe, briefly, why this issue is important. -->
-
-## How
-<!-- Optional. List exact steps (numbered) to implement or reproduce behavior. Screen shots/casts are welcome. -->
-
-## Notes
-<!-- Optional. Provide additional details (i.e operating system, software version(s), stack dump, etc.) -->

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,8 @@
+blank_issues_enabled: false
+contact_links:
+  - name: Community
+    url: https://alchemists.io/community
+    about: Please ask questions or discuss specifics here.
+  - name: Security
+    url: https://alchemists.io/policies/security
+    about: Please report security vulnerabilities here.

.github/ISSUE_TEMPLATE/issue.md

@@ -0,0 +1,18 @@
+---
+name: Issue
+title: "Add|Update|Fix|Remove|Refactor "
+about: Report an issue. Please use only one of the subject prefixes.
+---
+
+<!--
+Please focus on well written issues. Context: https://alchemists.io/articles/software_issues.
+-->
+
+## Why
+<!-- Required. Describe, briefly, why this issue is important. -->
+
+## How
+<!-- Optional. List exact steps to implement or reproduce behavior. Screen shots/casts are welcome! -->
+
+## Notes
+<!-- Optional. Provide additional details like operating system, software version(s), stack dump, logs, or anything else that would be helpful. -->

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,8 +1,8 @@
 ## Overview
-<!-- Required. Why is this important/necessary and what is the overarching architecture. -->
+<!-- Required. Describe, briefly, why this is necessary and what the overarching architecture is. -->
 
 ## Screenshots/Screencasts
-<!-- Optional. Provide supporting image/video. -->
+<!-- Optional. Provide supporting screen shots/casts. -->
 
 ## Details
-<!-- Optional. List the key features/highlights as bullet points. -->
+<!-- Optional. As bullet points, list related issue(s); major highlights; team callouts; and/or other information that is helpful. -->

.ruby-version

@@ -1 +1 @@
-3.4.3
+3.4.6

CITATION.cff

@@ -2,9 +2,9 @@ cff-version: 1.2.0
 message: Please use the following metadata when citing this project in your work.
 title: macOS
 abstract: Shell scripts for automated macOS machine setup.
-version: 20.2.0
+version: 21.0.0
 license: Hippocratic-2.1
-date-released: 2025-04-18
+date-released: 2025-09-19
 authors:
   - family-names: Kuhlmann
     given-names: Brooke

Gemfile

@@ -4,7 +4,7 @@ ruby file: ".ruby-version"
 
 source "https://rubygems.org"
 
-gem "caliber", "~> 0.79"
-gem "debug", "~> 1.10"
+gem "caliber", "~> 0.82"
+gem "debug", "~> 1.11"
 gem "git-lint", "~> 9.0"
-gem "rake", "~> 13.2"
+gem "rake", "~> 13.3"

README.adoc

@@ -42,7 +42,7 @@ toc::[]
 
 == Requirements
 
-. link:https://www.apple.com/macos/macos-sequoia[macOS 15.0.0 (Sequoia)]
+. link:https://www.apple.com/os/macos[macOS 26.0.0 (Tahoe)]
 . link:https://developer.apple.com/xcode[Xcode]
 
 == Setup
@@ -53,7 +53,7 @@ To install, run:
 ----
 git clone https://github.com/bkuhlmann/mac_os.git
 cd mac_os
-git checkout 20.2.0
+git checkout 21.0.0
 ----
 
 == Usage
@@ -141,6 +141,17 @@ macOS Boot Disk Recovery:
   4. Use the dialog options to launch Disk Utility, reinstall the system, etc.
 ....
 
+💡 You can ensure the right installer is downloaded and available for Boot Disk creation by running the following commands:
+
+[source,bash]
+----
+# Show which installers are available.
+softwareupdate --list-full-installers
+
+# Download desired version.
+sudo softwareupdate --fetch-full-installer --full-installer-version 26.0
+----
+
 === Customization
 
 All executable scripts can be found in the `bin` folder:

lib/settings.sh

@@ -5,7 +5,7 @@ set -o errexit
 set -o pipefail
 IFS=$'\n\t'
 
-export MAC_OS_BOOT_DISK_CREATOR="/Applications/Install macOS Sequoia.app/Contents/Resources/createinstallmedia"
+export MAC_OS_BOOT_DISK_CREATOR="/Applications/Install macOS Tahoe.app/Contents/Resources/createinstallmedia"
 export MAC_OS_BOOT_DISK_PATH="/Volumes/Untitled"
 export MAC_OS_WORK_PATH=/tmp/downloads
 export MAC_OS_CONFIG_PATH="../mac_os-config"