Comments (2)
@p-vernaeckt Thanks for pointing me towards the pCloud and reinstall.sh
script! It looks like a really neat project 😄
I'm always looking to find new ways of automating software installs.
Quick Intro / background: I'm a DevOps Engineer, and have used many IaC tools including Chef, Ansible, Terraform, Puppet. (Of course I started out using a set of Bash scripts and functions too!). So, I'm no stranger to this space and the problems and solutions available. For many years I've been using a forked version of
sprout-wrap
(based on Chef Solo +soloist
Ruby gem) to manage my MacBook. It has allowed me to quickly get set up on a new laptop across jobs & life transitions, so it's really been a great time saver when the need to reinstall or move to another machine arises. It also has been a huge time-sink and investment to maintain over so many years too! With all the changes to macOS over the years, Chef and other tools with complex dependency chains can break over time due to "bit rot" and OS / API shift. The latest changes from Apple like the CLang fork safety issue sure caused a lot of breakage & headaches. Sometimes the fastest way is to just use shell scripts indeed! (Maybe with a bit of glue and duct tape too! 😄 )
I've toyed around with the idea to make this Homebrew Cask auto-updating by automatically parsing out the pCloud API code like you suggest. It is certainly possible to make HTTP requests natively in Ruby and parse out the string. Also, the current design's maintenance overhead requires me to manually check the new download URL, find the new apicode
, create a sha256
sum and update this Cask Tap. This process does take time, and can be annoying when pCloud constantly releases new versions quickly. However, I decided against it initially given these two principles:
- Always installing the latest version doesn't follow this principle
- Any given run could install a new version
- This can introduce change to the user's system that they might not expect or have planned for!
- Example:
brew reinstall cask terraform
run on two separate occasions could install very different versions each with fundamental breaking changes that the user may not expect or want.
- Given the principle of the API contract, software packages tightly integrated and installed via Homebrew could break after any re-run of the
brew reinstall
command.- Actually Homebrew is a terrible example of this itself!
- The
brew install
command is only Idempotent on a "time dependent" basis- After running
brew update
we cannot guarantee what new package changes were introduced by the community - Running
brew install [--cask] <something>
will always assume we want to install latest at the moment of runtime. - Many package managers provide a method to lock dependencies to a specific version. Homebrew does allow this, but it's not as simple to set up.
- After running
- They are in the process now of deprecating the
brew cask
CLI commands- The
--cask
option will be needed soon on the various command verbs - This will effectively break their command line API
- Any scripts or tools that rely on this behavior must now change! 🤦♂️
- The
- The
- This tap has hardcoded
apicode
in a feeble attempt to regain some form of Idempotency (It's the best we can do without resorting to Homebrew versions for each new version that pCloud releases)
- Actually Homebrew is a terrible example of this itself!
- Downloading content from the Internet and not checking it using a checksum or gpg signature can be a security problem
- Not checking a downloaded binary makes the assumptions:
- That the downloaded content is secure and can be trusted
- That it has not been corrupted or modified by a potential attacker (e.g.: Inserting a virus payload)
- This tap has a hardcoded
sha256
checksum to verify that the binary we download has not changed or been modified in transit
So these are the dilemmas we run into given these considerations, and the original discussion in Homebrew/homebrew-cask#57634 about the URLs with changing tokens pCloud uses to distribute pCloud via itself. It's not an ideal situation, and perhaps I may eventually decide to experiment with Homebrew versions such as: a pcloud-drive@latest
and pcloud-drive@some-stable-version
set of options.
from homebrew-pcloud.
After reviewing this again... Maybe this is now much more possible given Homebrew's new livecheck
web-scraping capabilities. Also, the pCloud Release Notes page now has the publink
download codes for both Intel & Apple Silicon versions.
from homebrew-pcloud.
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from homebrew-pcloud.