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use nix-shell -p for dhall-to-nixpkgs example

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Valentin Gagarin 2023-09-25 17:00:55 +02:00 committed by fricklerhandwerk
parent 370097ce86
commit fba19509b1
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11
doc/languages-frameworks/dhall.section.md
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@ -303,11 +303,8 @@ You can use the `dhall-to-nixpkgs` command-line utility to automate
packaging Dhall code. For example: packaging Dhall code. For example:
```ShellSession ```ShellSession
$ nix-env --install --attr haskellPackages.dhall-nixpkgs $ nix-shell -p haskellPackages.dhall-nixpkgs nix-prefetch-git
[nix-shell]$ dhall-to-nixpkgs github https://github.com/Gabriella439/dhall-semver.git
$ nix-env --install --attr nix-prefetch-git # Used by dhall-to-nixpkgs
$ dhall-to-nixpkgs github https://github.com/Gabriella439/dhall-semver.git
{ buildDhallGitHubPackage, Prelude }: { buildDhallGitHubPackage, Prelude }:
buildDhallGitHubPackage { buildDhallGitHubPackage {
name = "dhall-semver"; name = "dhall-semver";
@ -325,6 +322,10 @@ $ dhall-to-nixpkgs github https://github.com/Gabriella439/dhall-semver.git
} }
``` ```
:::{.note}
`nix-prefetch-git` has to be in `$PATH` for `dhall-to-nixpkgs` to work.
:::
The utility takes care of automatically detecting remote imports and converting The utility takes care of automatically detecting remote imports and converting
them to package dependencies. You can also use the utility on local them to package dependencies. You can also use the utility on local
Dhall directories, too: Dhall directories, too: