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50 lines
1.1 KiB
Markdown
50 lines
1.1 KiB
Markdown
R""(
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# Examples
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* Apply the build environment of GNU hello to the current shell:
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```console
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# . <(nix print-dev-env nixpkgs#hello)
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```
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* Get the build environment in JSON format:
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```console
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# nix print-dev-env nixpkgs#hello --json
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```
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The output will look like this:
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```json
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{
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"bashFunctions": {
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"buildPhase": " \n runHook preBuild;\n...",
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...
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},
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"variables": {
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"src": {
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"type": "exported",
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"value": "/nix/store/3x7dwzq014bblazs7kq20p9hyzz0qh8g-hello-2.10.tar.gz"
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},
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"postUnpackHooks": {
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"type": "array",
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"value": ["_updateSourceDateEpochFromSourceRoot"]
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},
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...
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}
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}
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```
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# Description
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This command prints a shell script that can be sourced by `bash` and
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that sets the variables and shell functions defined by the build
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process of *installable*. This allows you to get a similar build
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environment in your current shell rather than in a subshell (as with
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`nix develop`).
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With `--json`, the output is a JSON serialisation of the variables and
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functions defined by the build process.
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)""
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