# macOS (Homebrew) brew upgrade shell-dep --fetch-HEAD sudo apt install shell-dep=46.0-hot Step 2: Verify the installation shell-dep version # Output: shell-dep 46.0-hot (commit: a7f3b2c, hot-cache enabled) Step 3: Create a test branch git checkout -b test/shell-dep-v46-hot shell-dep hot-upgrade git add .shell-dep.lock git commit -m "chore: upgrade to shell-dep v46 hot" Step 4: Run your pipeline Execute your usual build or test suite. Monitor for the new hot cache logs (they appear in green with a 🔥 emoji). Real-World Performance Gains Early adopters have reported dramatic improvements. Here’s a small sample:
| Organization | Number of deps | v45 runtime (CI) | v46 Hot runtime | Savings | |--------------|----------------|------------------|-----------------|---------| | FinTechCorp | 28 | 47s | 12s | 74% | | CloudNativeCo | 112 | 3m 20s | 48s | 76% | | DevShop | 8 | 9s | 1.8s | 80% | shell dep version 46 hot
Instead of writing brittle which checks or embedding apt-get install commands in your scripts, shell-dep allows you to define a .shell-dep.toml file: # macOS (Homebrew) brew upgrade shell-dep --fetch-HEAD sudo
This article dives deep into everything you need to know about : its new features, breaking changes, migration path, and why every senior SRE should upgrade by the end of the week. What is Shell Dep? A Quick Refresher For the uninitiated, shell-dep is a declarative dependency manager for POSIX-compliant shell scripts. Think of it as a hybrid between pip (for Python) and vcpkg (for C++), but designed exclusively for shell utilities like jq , curl , ffmpeg , rg , fd , and thousands of other CLI tools. Here’s a small sample: | Organization | Number
introduces a daemon-less shared memory cache. The first time you run a command, it builds a hot manifest in /dev/shm (or a Windows equivalent). Subsequent runs are almost instantaneous.