mirror/nix-book
1
0
Fork 0
mirror of https://codeberg.org/mhwombat/nix-book.git synced 2025-12-26 16:24:56 +08:00
Code Issues Projects Releases Packages Wiki Activity Actions

temp

Browse source
This commit is contained in:
Amy de Buitléir 2025-09-15 17:31:13 +01:00
parent 77354ff20c
commit bd082ef03a
7 changed files with 42 additions and 66 deletions
Download patch file Download diff file Expand all files Collapse all files

5
index.html
View file

@ -5249,7 +5249,8 @@ hello-flake
</div>
</div>
<div class="paragraph">
<p>Line 5 adds <code>hello-flake</code> as an input to this flake.
<p>Line 5 adds <code>hello-flake</code> as an input to this flake,
Line 8 allows the output function to reference <code>hello-flake</code>.
As expected, we need to add <code>hello-flake</code> as a build input, which we do in line 36.
That does make it available at build and runtime, but it doesn&#8217;t put it on the path,
so our <code>hello-again</code> script won&#8217;t be able to find it.</p>
@ -5607,7 +5608,7 @@ Hello from your flake!</pre>
</div>
<div id="footer">
<div id="footer-text">
Last updated 2025-09-15 16:10:28 IST
Last updated 2025-09-15 16:12:35 IST
</div>
</div>
</body>

14
source/hello-flake/main.adoc0
View file

@ -55,3 +55,17 @@ $# rm temp.sh
$# echo '$ '${executable}
$# ${executable}
....
== Flake outputs
You can find the outputs of a flake using the `nix flake show` command.
....
$# echo '$ nix flake show --all-systems git+https://codeberg.org/mhwombat/hello-flake'
$# nix flake show git+https://codeberg.org/mhwombat/hello-flake --quiet | sed -e 's/\x1b\[[0-9;]*m//g'
....
Examining the output of this command,
we see that this flake supports multiple architectures
(aarch64-darwin, aarch64-linux, x86_64-darwin and x86_64-linux)
and provides both a package and an app called `hello`.

47
source/recipes/build/flake/tempwork/flake.nix
View file

@ -1,47 +0,0 @@
{
inputs = {
nixpkgs.url = "github:NixOS/nixpkgs";
flake-utils.url = "github:numtide/flake-utils";
hello-flake.url = "git+https://codeberg.org/mhwombat/hello-flake";
};
outputs = { self, nixpkgs, flake-utils, hello-flake }:
flake-utils.lib.eachDefaultSystem (system:
let
pkgs = import nixpkgs { inherit system; };
in
{
packages = rec {
hello = pkgs.stdenv.mkDerivation rec {
name = "hello-again";
src = ./.;
unpackPhase = "true";
buildPhase = ":";
installPhase =
''
mkdir -p $out/bin
cp $src/hello-again $out/bin
chmod +x $out/bin/hello-again
# modify the hello-again script so it can find hello-flake
HELLO=$(type -p hello-flake)
sed "s_hello-flake_"$HELLO"_" --in-place $out/bin/hello-again
'';
buildInputs = [ hello-flake.packages.${system}.hello ];
};
default = hello;
};
apps = rec {
hello = flake-utils.lib.mkApp { drv = self.packages.${system}.hello; };
default = hello;
};
}
);
}

4
source/recipes/build/flake/tempwork/hello-again
View file

@ -1,4 +0,0 @@
#!/usr/bin/env sh
echo "I'm a flake, and I'm running a command defined in a another flake."
hello-flake

11
source/recipes/devshell/flake/main.adoc0
View file

@ -28,16 +28,7 @@ $# grep buildInputs flake.nix | sed 's/ //g; s/.*\[//; s/\].*//'
Why is the first part `hello-flake` and the last part `hello`?
The first part refers to the name we assigned in the input section of our flake,
and the last part is the name of the package or app we want.
You can find the outputs of a flake using the `nix flake show` command.
....
$# echo '$ nix flake show git+https://codeberg.org/mhwombat/hello-flake'
$# nix flake show git+https://codeberg.org/mhwombat/hello-flake --quiet | sed -e 's/\x1b\[[0-9;]*m//g'
....
Examining the output of this command,
we see that this flake provides both a package and an app called `hello`.
(See <<_flake_outputs>> for how to identify flake outputs.)
Here's a demonstration using the shell.

6
source/recipes/build/flake/tempwork/flake.lock → source/recipes/devshell/flake/tempwork/flake.lock generated
View file

@ -72,11 +72,11 @@
},
"nixpkgs_2": {
"locked": {
"lastModified": 1757945769,
"narHash": "sha256-z/SdByTaDnEx4Zj0pyMwzY+uKxV/2TpQQ6ZKijKc2t0=",
"lastModified": 1757952092,
"narHash": "sha256-BcfTLFCU7elUJ2dwyt0iTjxsz/XLh+8ZygDcFwy6xPE=",
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "62b2408b85dc46dab0b8ca4250471b9cb23425f0",
"rev": "fd76dc9e7c68ac7c3941ba2af2bedcd79c5cf4ed",
"type": "github"
},
"original": {

21
source/recipes/devshell/flake/tempwork/flake.nix Normal file
View file

@ -0,0 +1,21 @@
{
inputs = {
nixpkgs.url = "github:NixOS/nixpkgs";
flake-utils.url = "github:numtide/flake-utils";
hello-flake.url = "git+https://codeberg.org/mhwombat/hello-flake";
};
outputs = { self, nixpkgs, flake-utils, hello-flake }:
flake-utils.lib.eachDefaultSystem (system:
let
pkgs = import nixpkgs { inherit system; };
in
{
devShells = rec {
default = pkgs.mkShell {
buildInputs = [ hello-flake.packages.${system}.hello ];
};
};
}
);
}