OS and Linux distribution support requests

[Phundrak]

While #2 standardized the retrieval of the name of the running Linux distribution, eshell-info-banner.el has yet to support non-standard Linux distributions (such as GUIX) and non-Linux OSes, such as macOS and Windows.
Here will be listed Linux distributions and OSes not yet supported:

• macOS
  Link to keep up with macOS versions
  • OS name and version 0f39c31
  • Kernel version 0f39c31
  • Partitions detection 3934c4e
  • Memory display 46ada1b
• Windows
  • OS name and version Add Windows version detection #6
  • Partitions detection
    • if duf is installed on the system, d35516a
    • native solution
  • Memory display
• BSDs
  • OS name and version 0a8a340
  • Kernel version 0f39c31
  • Partitions detection
    • FreeBSD 763d459
    • NetBSD a2f24e4
    • DragonFly BSD 36b964a
    • OpenBSD untested
    • PC-BSD untested
  • Memory display
    • FreeBSD 0a8a340
    • NetBSD 382bb55
    • DragonFly BSD 36b964a
    • OpenBSD untested
    • PC-BSD untested
  • Fix uptime for NetBSD 89f78f0
• Hurd
  • OS name and version 0f39c31
  • Kernel version 0f39c31
  • Partitions detection 763d459
  • Memory display 763d459
• Linux distributions
  • GUIX 0f39c31
  • Bedrock Linux c8073fa
  • Proxmox c8073fa
  • Android 0c9e6de
  • ChromeOS
  • and others

This list is subject to changes in the future, by shrinking or expanding.

[bkaestner]

• Windows:

  • OS name and version Add Windows version detection #6
  • Partitions detection
  • Memory display

You can use wmic for both partitions and memory:

wmic logicaldisk get Caption,Size,Freespace,Name,Filesystem /FORMAT:csv

Node,Caption,FileSystem,FreeSpace,Name,Size
BensPC,C:,NTFS,50240790528,C:,249083572224
BensPC,D:,NTFS,509776490496,D:,3000457228288

wmic os get TotalVisibleMemorySize, FreePhysicalMemory /FORMAT:csv

Node,FreePhysicalMemory,TotalVisibleMemorySize
BensPC,10777156,16706896

Unfortunately, wmic is both deprecated and somewhat unreliable: most calls take <30ms, but some take more than 5 seconds. Maybe someone else with more Windows knowledge can provide a better alternative. Feel free to ping me if you're still interested in an initial version based on wmic.

[bkaestner]

Unfortunately, wmic is both deprecated and somewhat unreliable

This might be my machine only, though. I have a network share mounted, but the server is offline. Windows still tries to reach it, check its properties, and times out after some seconds. This might also impede other solutions on other operating systems, e.g. nfs, sshfs or similar shares. That being said, if you only want to check the "usual" mounts, we can probably use Emacs' internal tools:

(defcustom eshell-info-banner-partition-windows-volumes
  (mapcar (lambda (x) (format "%c:" x)) (number-sequence ?C ?F))
  "Checked drive letters for volume measurements."
  :group 'eshell-info-banner
  :type '(repeat (string :tag "Volume letter")))

(defun windows-size-example ()
  "Returns a plist of the drives in `eshell-info-banner-partition-windows-volumes' with 
their respective sizes.

For every drive in the aforementioned variable, the resulting plist contains the 
following properties:

  label LABEL: the entry from `eshell-info-banner-partition-windows-volumes'
  free  BYTES: either the number of available bytes or nil
  size  BYTES: either the total disk size or nil on error

In order to format the bytes, you can use `file-size-human-readable-iec'."
  (mapcar (lambda (d)
            (let* ((info (file-system-info d))
                   (size (and info (nth 0 info)))
                   (free (and info (nth 1 info))))
              `(label ,d size ,size free ,free)))
          eshell-info-banner-partition-windows-volumes))

(mapconcat (lambda (x)
             (if (plist-get x 'size)
                 (format "Drive %s %s / %s\n"
                         (plist-get x 'label)
                         (file-size-human-readable-iec (plist-get x 'free))
                         (file-size-human-readable-iec (plist-get x 'size)))
               ""))             
           (windows-size-example)
           "")

The resulting string on the example above would be

Drive C: 46.5 GiB / 232 GiB
Drive D: 474.8 GiB / 2.7 TiB

Again, feel free to ping me if I should prepare a PR based on the solution above or wmic.

[Phundrak]

Hello, Apologies for the (very) late answer. I’ll admit I’m a bit reluctant on using wmic since it is deprecated, and as you pointed out it is not reliable. But I guess it could work for some users, so something that could be done is another custom variable like `eshell-info-banner-display-windows-partitions-p` so that eshell-info-banner displays Windows partitions only when non-nil. That way if it is too unreliable for some users, or even if it gets removed entirely in future Windows updates, users can simply turn it off and people for whom it works and/or who use older Windows versions will still be able to use it.

[gopar]

Looks like Mac os has versions 11.5 and 11.6. Seems like simple fixes to include in the list from the looks of it :)

[Phundrak]

It shold be, indeed. Are those still macOS Big Sur, or is it a new name?

…

-- Lucien “Phundrak” Cartier-Tilet <https://phundrak.com> (Français) <https://phundrak.com/en> (English) Sent from GNU/Emacs

[gopar]

Still Big Sur :)
https://support.apple.com/en-us/HT211896

[Phundrak]

Alright, I’m updating the list. Thanks for your help!

…

-- Lucien “Phundrak” Cartier-Tilet <https://phundrak.com> (Français) <https://phundrak.com/en> (English) Sent from GNU/Emacs