pyrox.dev
1{ lib, stdenvNoCC, fetchurl }:
2let
3 srcs = {
4 train-images = fetchurl {
5 url = "http://yann.lecun.com/exdb/mnist/train-images-idx3-ubyte.gz";
6 sha256 = "029na81z5a1c9l1a8472dgshami6f2iixs3m2ji6ym6cffzwl3s4";
7 };
8 train-labels = fetchurl {
9 url = "http://yann.lecun.com/exdb/mnist/train-labels-idx1-ubyte.gz";
10 sha256 = "0p152200wwx0w65sqb65grb3v8ncjp230aykmvbbx2sm19556lim";
11 };
12 test-images = fetchurl {
13 url = "http://yann.lecun.com/exdb/mnist/t10k-images-idx3-ubyte.gz";
14 sha256 = "1rn4vfigaxn2ms24bf4jwzzflgp3hvz0gksvb8j7j70w19xjqhld";
15 };
16 test-labels = fetchurl {
17 url = "http://yann.lecun.com/exdb/mnist/t10k-labels-idx1-ubyte.gz";
18 sha256 = "1imf0i194ndjxzxdx87zlgn728xx3p1qhq1ssbmnvv005vwn1bpp";
19 };
20 };
21in
22 stdenvNoCC.mkDerivation rec {
23 pname = "mnist";
24 version = "2018-11-16";
25 installPhase = ''
26 mkdir -p $out
27 ln -s "${srcs.train-images}" "$out/${srcs.train-images.name}"
28 ln -s "${srcs.train-labels}" "$out/${srcs.train-labels.name}"
29 ln -s "${srcs.test-images}" "$out/${srcs.test-images.name}"
30 ln -s "${srcs.test-labels}" "$out/${srcs.test-labels.name}"
31 '';
32 dontUnpack = true;
33 meta = with lib; {
34 description = "A large database of handwritten digits";
35 longDescription = ''
36 The MNIST database (Modified National Institute of Standards and
37 Technology database) is a large database of handwritten digits that is
38 commonly used for training various image processing systems.
39 '';
40 homepage = "http://yann.lecun.com/exdb/mnist/index.html";
41 license = licenses.cc-by-sa-30;
42 platforms = platforms.all;
43 maintainers = with maintainers; [ cmcdragonkai ];
44 };
45 }