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Amy de Buitléir 2023-06-13 18:28:11 +01:00
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source/python-flake/main.adoc0
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@ -11,9 +11,14 @@ $ git init
Next, we’ll create a simple Python program.
////
$ curl https://codeberg.org/mhwombat/hello-flake-python/raw/branch/main/hello.py --silent --output hello.py
////
[source,python,linenums]
.hello.py
....
$# curl https://codeberg.org/mhwombat/hello-flake-python/raw/branch/main/hello.py --silent --output hello.py
$ cat hello.py
$# cat hello.py
....
Before we package the program, let’s verify that it runs. We’re going to
@ -28,10 +33,13 @@ packages you need), and you want to experiment a bit first.
The command to enter a temporary shell is
`nix-shell -p` _packages_
`nix-shell -p __packages__`
If there are multiple packages, they should be separated by spaces. Note
that the command used here is `nix-shell` with a hyphen, not `nix shell`
If there are multiple packages, they should be separated by spaces.
[NOTE]
====
The command used here is `nix-shell` with a hyphen, not `nix shell`
with a space; those are two different commands. In fact there are
hyphenated and non-hyphenated versions of many Nix commands, and yes,
it’s confusing. The non-hyphenated commands were introduced when support
@ -39,6 +47,7 @@ for flakes was added to Nix. I predict that eventually all hyphenated
commands will be replaced with non-hyphenated versions. Until then, a
useful rule of thumb is that non-hyphenated commands are for for working
directly with flakes; hyphenated commands are for everything else.
====
Let’s enter a shell with Python so we can test the program.
@ -56,9 +65,14 @@ Packaging User Guide], especially the section on
https://packaging.python.org/en/latest/guides/distributing-packages-using-setuptools/#setup-args[setup
args].
////
$ curl https://codeberg.org/mhwombat/hello-flake-python/raw/branch/main/setup.py --silent --output setup.py
////
[source,python,linenums]
.setup.py
....
$# curl https://codeberg.org/mhwombat/hello-flake-python/raw/branch/main/setup.py --silent --output setup.py
$ cat setup.py
$# cat setup.py
....
We won’t write `flake.nix` just yet. First we’ll try building the
@ -143,9 +157,14 @@ function.
If you put all the pieces together, your `flake.nix` should look
something like this.
////
$ curl https://codeberg.org/mhwombat/hello-flake-python/raw/branch/main/flake.nix --silent --output flake.nix
////
[source,nix,linenums]
.flake.nix
....
$# curl https://codeberg.org/mhwombat/hello-flake-python/raw/branch/main/flake.nix --silent --output flake.nix
$ cat flake.nix
$# cat flake.nix
....
Let’s try out the new flake.