Nix-shell shebang - Revision history

N0099: /* See also */

2026-01-20T22:12:38Z

2025-08-03T21:59:12Z

C#: Add EntryPointFileDirectoryPath to sample, new in preview 6

← Older revision		Revision as of 21:59, 3 August 2025
Line 46:		Line 46:

	using Humanizer;		using Humanizer;

			Environment.CurrentDirectory = (string) AppContext.GetData("EntryPointFileDirectoryPath")!; // equivalent of `cd $(dirname $0)`

	var dotNet9Released = DateTimeOffset.Parse("2024-12-03");		var dotNet9Released = DateTimeOffset.Parse("2024-12-03");

2025-07-19T23:40:36Z

C#: They improved the CLI in preview 6

← Older revision		Revision as of 23:40, 19 July 2025
Line 36:		Line 36:
	=== C# ===		=== C# ===

	Using ~~<code>dotnet run app.cs</code>~~, new in .NET 10:		Using file-based apps, new in .NET 10:

	<syntaxHighlight lang="csharp">		<syntaxHighlight lang="csharp">
	#!/usr/bin/env nix-shell		#!/usr/bin/env nix-shell
	/*		/*
	#! nix-shell -i "dotnet ~~run"~~ -p dotnetCorePackages.dotnet_10.sdk		#! nix-shell -i dotnet -p dotnetCorePackages.dotnet_10.sdk
	*/		*/
	#:package Humanizer@2.14.1		#:package Humanizer@2.14.1

2025-07-04T07:31:20Z

C#: New section

@@ Line 32: / Line 32: @@
 convert "$1" -scale 50% "$1.s50.jpg" &&
 cowsay "done $1.q50.jpg"
 </syntaxHighlight>

2024-05-28T21:58:47Z

← Older revision		Revision as of 21:58, 28 May 2024
Line 150:		Line 150:
	* [https://gist.github.com/travisbhartwell/f972aab227306edfcfea nix-shell and Shebang Lines]		* [https://gist.github.com/travisbhartwell/f972aab227306edfcfea nix-shell and Shebang Lines]
	* [https://notes.yukiisbo.red/posts/2021/07/Spice_up_with_Nix_Scripts.html Spice up with Nix: Scripts with magical dependencies]		* [https://notes.yukiisbo.red/posts/2021/07/Spice_up_with_Nix_Scripts.html Spice up with Nix: Scripts with magical dependencies]

			[[Category:Nix]]
			[[Category:Shell]]

2024-05-28T07:06:29Z

← Older revision		Revision as of 07:06, 28 May 2024
Line 133:		Line 133:
	</syntaxHighlight>		</syntaxHighlight>

	The [https://~~nixos~~.~~org~~/manual/nix/~~stable~~/command-ref/new-cli/~~nix.html?highlight=shebang#shebang~~-~~interpreter~~ doc] mentions that it should be possible to run more complex commands using multiple lines, but it does not work for me as reported [https://github.com/NixOS/nixpkgs/issues/280033 here].		The [https://nix.dev/manual/nix/2.19/command-ref/new-cli/nix3-shell doc] mentions that it should be possible to run more complex commands using multiple lines, but it does not work for me as reported [https://github.com/NixOS/nixpkgs/issues/280033 here].

2024-01-10T13:25:11Z

← Older revision		Revision as of 13:25, 10 January 2024
Line 133:		Line 133:
	</syntaxHighlight>		</syntaxHighlight>

	The [https://nixos.org/manual/nix/stable/command-ref/new-cli/nix.html?highlight=shebang#shebang-interpreter doc] mentions that it should be possible to run more complex commands using multiple lines, but it does not work for me as reported [~~here~~ https://github.com/NixOS/nixpkgs/issues/280033].		The [https://nixos.org/manual/nix/stable/command-ref/new-cli/nix.html?highlight=shebang#shebang-interpreter doc] mentions that it should be possible to run more complex commands using multiple lines, but it does not work for me as reported [https://github.com/NixOS/nixpkgs/issues/280033 here].

2024-01-10T13:24:11Z

@@ Line 123: / Line 123: @@
 echo hello world
 </syntaxHighlight>
 == Performance ==

2023-12-19T11:13:30Z

Add link to new CLI docs

← Older revision		Revision as of 11:13, 19 December 2023
Line 7:		Line 7:
	The first shebang line is always <code>#! /usr/bin/env nix-shell</code>.<br>		The first shebang line is always <code>#! /usr/bin/env nix-shell</code>.<br>
	The second shebang line declares the script language and the script dependencies.		The second shebang line declares the script language and the script dependencies.

			As of Nix 2.19.0 you can also use the new CLI <code>nix shell</code> and flakes to define shebangs. See [https://nixos.org/manual/nix/stable/command-ref/new-cli/nix.html?highlight=shebang#shebang-interpreter docs].

	== Examples ==		== Examples ==

2023-12-07T14:48:23Z

Add section Haskell

← Older revision		Revision as of 14:48, 7 December 2023
Line 98:		Line 98:
	</syntaxHighlight>		</syntaxHighlight>

			=== Haskell ===
			<syntaxHighlight lang="haskell">
			#! /usr/bin/env nix-shell
			#! nix-shell -p "haskellPackages.ghcWithPackages (p: with p; [turtle])" -i runghc

			{-# LANGUAGE OverloadedStrings #-}

			import Turtle

			main = echo "Hello world!"
			</syntaxHighlight>

	== Pinning nixpkgs ==		== Pinning nixpkgs ==

← Older revision		Revision as of 22:12, 20 January 2026
Line 167:		Line 167:
	== See also ==		== See also ==

	* [https://~~nixos~~.~~org~~/manual/nix/~~unstable~~/command-ref/nix-shell.html?highlight=shebang#use-as-a--interpreter ~~nix-shell: Use As a #!-Interpreter] in nix manual~~		* [https://nix.dev/manual/nix/stable/command-ref/nix-shell.html?highlight=shebang#use-as-a--interpreter nix-shell: Use As a #!-Interpreter] man page
	* [https://www.mankier.com/1/nix-shell#Use_As_a_%23!-Interpreter nix-shell: Use As a #!-Interpreter] man page
	* [https://gist.github.com/travisbhartwell/f972aab227306edfcfea nix-shell and Shebang Lines]		* [https://gist.github.com/travisbhartwell/f972aab227306edfcfea nix-shell and Shebang Lines]
	* [https://notes.yukiisbo.red/posts/2021/07/Spice_up_with_Nix_Scripts.html Spice up with Nix: Scripts with magical dependencies]		* [https://notes.yukiisbo.red/posts/2021/07/Spice_up_with_Nix_Scripts.html Spice up with Nix: Scripts with magical dependencies]