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docs: make sample code valid Nix expressions

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This commit is contained in:
Valentin Gagarin 2024-11-08 22:38:34 +01:00
parent 73794b4d2d
commit 317f7f1a4c
1 changed files with 18 additions and 6 deletions
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24
lib/fixed-points.nix
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@ -160,7 +160,9 @@ rec {
A fixed-point function returning an attribute set has the form A fixed-point function returning an attribute set has the form
```nix ```nix
final: { # attributes } final: {
# attributes
}
``` ```
where `final` refers to the lazily evaluated attribute set returned by the fixed-point function. where `final` refers to the lazily evaluated attribute set returned by the fixed-point function.
@ -168,7 +170,9 @@ rec {
An overlay to such a fixed-point function has the form An overlay to such a fixed-point function has the form
```nix ```nix
final: prev: { # attributes } final: prev: {
# attributes
}
``` ```
where `prev` refers to the result of the original function to `final`, and `final` is the result of the composition of the overlay and the original function. where `prev` refers to the result of the original function to `final`, and `final` is the result of the composition of the overlay and the original function.
@ -177,8 +181,12 @@ rec {
```nix ```nix
let let
f = final: { # attributes }; f = final: {
overlay = final: prev: { # attributes }; # attributes
};
overlay = final: prev: {
# attributes
};
in extends overlay f; in extends overlay f;
``` ```
@ -186,8 +194,12 @@ rec {
```nix ```nix
let let
f = final: { # attributes }; f = final: {
overlay = final: prev: { # attributes }; # attributes
};
overlay = final: prev: {
# attributes
};
g = extends overlay f; g = extends overlay f;
in fix g in fix g
``` ```