Pynixutil - Utility functions for working with data from Nix in Python
Examples
Base32 encoding/decoding
import pynixutil
input = "v5sv61sszx301i0x6xysaqzla09nksnd"
b = pynixutil.b32decode(input)
output = pynixutil.b32encode(b)
assert input == output
Derivation parsing
import pynixutil
# Returns a dict with the same shape as nix show-derivation uses
d = pynixutil.drvparse(open("/nix/store/33cbakl9bg880apzjyvwwgkwsn8zzpcb-hello-2.10.drv").read())
print(d)
Returns a structure like
Derivation(
outputs={
"out": DerivationOutput(
path="/nix/store/9rg06p1rcpw3y9m1xpji39w43zj0sny6-hello-2.10",
hash_algo=None,
hash=None
)
},
input_drvs={
"/nix/store/0bwic13piazaq033zz893fhd40pb6sj7-stdenv-linux.drv": [
"out"
],
"/nix/store/b7xrdpwx9jljhw32knn844xyvcmfkbfk-bash-4.4-p23.drv": [
"out"
],
"/nix/store/vsf383dfgky6bplikvbvixyshkdzd9hz-hello-2.10.tar.gz.drv": [
"out"
]
},
input_srcs=[
"/nix/store/9krlzvny65gdc8s7kpb6lkx8cd02c25b-default-builder.sh"
],
system="x86_64-linux",
builder="/nix/store/x0dcb2rxlzf32g0ddfkqqz1sfcyx4yay-bash-4.4-p23/bin/bash",
args=[
"-e",
"/nix/store/9krlzvny65gdc8s7kpb6lkx8cd02c25b-default-builder.sh"
],
env={
"buildInputs": "",
"builder": "/nix/store/x0dcb2rxlzf32g0ddfkqqz1sfcyx4yay-bash-4.4-p23/bin/bash",
"configureFlags": "",
"depsBuildBuild": "",
"depsBuildBuildPropagated": "",
"depsBuildTarget": "",
"depsBuildTargetPropagated": "",
"depsHostHost": "",
"depsHostHostPropagated": "",
"depsTargetTarget": "",
"depsTargetTargetPropagated": "",
"doCheck": "1",
"doInstallCheck": "",
"name": "hello-2.10",
"nativeBuildInputs": "",
"out": "/nix/store/9rg06p1rcpw3y9m1xpji39w43zj0sny6-hello-2.10",
"outputs": "out",
"patches": "",
"pname": "hello",
"propagatedBuildInputs": "",
"propagatedNativeBuildInputs": "",
"src": "/nix/store/3x7dwzq014bblazs7kq20p9hyzz0qh8g-hello-2.10.tar.gz",
"stdenv": "/nix/store/qdf49mvm79r83n9c9s7pkmmjqwhrw8jv-stdenv-linux",
"strictDeps": "",
"system": "x86_64-linux",
"version": "2.10"
}
)
This mostly matches the data returned by nix show-derivation, but with more pythonic attribute names.
55 Sep 04, 2022
200 Dec 20, 2022
10 Mar 23, 2022
33 Nov 26, 2022
623 Dec 10, 2022
261 Jan 04, 2023
3.2k Jan 06, 2023
40 Sep 19, 2022
1 Dec 23, 2021
5.9k Jan 07, 2023
28 Dec 12, 2022
2 Jan 28, 2022
15 Oct 19, 2022
74 Sep 13, 2022
1 Nov 24, 2021
12 Aug 26, 2022
49 Jul 10, 2022
34 Nov 18, 2022
99 Dec 13, 2022
25 Aug 05, 2022