How it should be?
I imagine that a web browser should have been a "window" to the Internet world that provides easy and efficient way to graphically access resources exposed by multiple protocols: HTTP(S), (S)FTP, Gopher, Gemini, etc…
How it is?
Only few protocols are supported!
Recently FTP support got "deprecated" in Firefox. It can still be enabled in by setting network.ftp.enabled to true.
FTP support is announced to be completely gone in FF 90.
Chrome dropped FTP some time ago.
BUT!
Luckily we have Emacs!
GNU Emacs has packages to support all kinds of protocols.
eww which is a simple HTTP(S) browser like w3m (also renders images)tramp allows you to access files by SSHelpher allows you to access Gemini and Gopher sites (graphically)ange-ftp allows you to connect to FTP servers- and finally
net-utils which wraps around system utilities to provide interactive mode for many protocols, ie.: gopher, irc, ntp, pop3, www
Also see: Fast-Racket at Racket's GitHub Wiki
Creating binaries
You can create portable binaries with Racket's raco command! Use raco exe and raco distribute.
More -> https://docs.racket-lang.org/raco/exe.html
Sample games
Racket provides a executable plt-games, when ran (from console) it opens a menu of miscellaneous games, among them: jewel, minesweeper, aces, spider, checkers. & more (20 games total).
Plots
You can plot data in 2d & 3d forms.
2D
Sample code:
|
|
#lang racket/base
(require racket/gui/base racket/math plot)
(plot-new-window? #true)
(plot (function sin (- pi) pi #:label "y = sin(x)"))
|
3D
Sample code:
|
|
#lang racket/base
(require racket/gui/base racket/math plot)
(plot-new-window? #true)
(plot3d
(surface3d (lambda (x y) (* (cos x) (sin y)))
(- pi) pi (- pi) pi)
#:title "An R × R → R function"
#:x-label "x" #:y-label "y" #:z-label "cos(x) sin(y)")
|
Browser
There's a included library to render web pages, just "(require browser)".
Sample code:
|
|
#lang racket
(require browser)
(open-url "https://xgqt.gitlab.io/")
|
FFI
You can use Racket's Foreign Function Interface to interact with non-Racket libraries to make use of very fast libraries written in (mainly) FORTRAN & C.
For example sci uses FFI for CBLAS & LAPACK.
Parallelism
For greater speed up with parallel execution there are futures, places and distributed places (for distributed programming).
Intro
Sage may be available on your distro but on Gentoo such frivolities for students are not there yet, so I had to install it the manual way.
User
I went to the Sage website, to the "download-source" link. The source mirror I picked was France.
Ok, so let's follow Sage Math build instructions and get it going
|
|
wget www-ftp.lip6.fr/pub/math/sagemath/src/sage-9.2.tar.gz
tar xvf sage-9.2.tar.gz
cd sage-9.2
./configure
make
|
And now, let's wait…
Portage
After a long, long, long time waiting I remembered that there existed a Gentoo overlay for Sage. And in the meantime I thought I'd try that solution instead since some good Gentoo people already did most of the effort.
Just a few files to edit…
File: /etc/portage/repos.conf/sage-on-gentoo.conf
1
2
3
4
5
6
7
8
9
10
11
12
13
14 |
# -*- conf -*-
[sage-on-gentoo]
auto-sync = yes
location = /var/db/repos/sage-on-gentoo
priority = 999
sync-git-clone-extra-opts = --depth=999999999 --no-shallow-submodules --verbose
sync-git-pull-extra-opts = --verbose
sync-type = git
sync-umask = 022
sync-uri = https://github.com/cschwan/sage-on-gentoo.git
sync-user = root:portage
|
File: /etc/portage/package.accept~keywords~/zz-sage
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20 |
# -*- conf -*-
sci-mathematics/sage **
*/*::sage-on-gentoo
dev-python/cvxopt
media-gfx/tachyon
sci-libs/bliss
sci-libs/dsdp
sci-libs/fflas-ffpack
sci-libs/fplll
sci-libs/libhomfly
sci-libs/linbox
sci-libs/m4rie
sci-mathematics/glpk
|
File: /etc/portage/package.use/zz-sage
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20 |
# -*- conf -*-
sci-mathematics/sage -doc-html -doc-html-bin
sci-mathematics/sage -doc-pdf -doc-pdf-bin
sci-mathematics/sage -jmol
sci-mathematics/sage X bliss meataxe
dev-python/pplpy doc
sci-libs/cddlib tools
sci-libs/pynac -giac
sci-mathematics/eclib flint
sci-mathematics/flint ntl
sci-mathematics/glpk gmp
sci-mathematics/gmp-ecm -openmp
sci-mathematics/lcalc pari
sci-mathematics/maxima ecls
sci-mathematics/pari gmp doc
|
Now - let's build Sage with Portage!
>>> Emerging (1 of 100) sci-mathematics/cliquer–1.21::gentoo
At least I know more or less how long I'm going to wait and know what exactly fails to build, if anything does.
Final
Build
$ qlop -tv sage
> 2021–03–23T20:49:12 >>> sci-mathematics/sage–9999: 55′04″
Git stats
Overlays
This info we can easily gather with executing:
Gentoo' HEAD: 33f2d770c28307b1e9a1199c681e1c543602c6d4
Sage-on-Gentoo's HEAD: f7eac5b7e1a844132164b7593dab85cd87918664
Sage
Sage repository's HEAD (because we are using the live (9999) ebuild):
|
|
cat /var/cache/distfiles/git3-src/sagemath_sage.git/refs/heads/develop
|
Which returns: 5cb72aade9b297c10bb0f1ae8529466e5b5eb41d