FAQ: Difference between revisions

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== I installed a library but my compiler is not finding it. Why? ==

With nix, only ''applications'' should be installed into profiles. Libraries are used using nix-shell. If you want to compile a piece of software that requires zlib and uses pkg-config to discover it, run <code>nix-shell -p pkgconfig zlib</code> to get into a shell with the appropriate environment variables set. In there, a configure script will work as expected.

With nix, only ''applications'' should be installed into profiles. Libraries are used using nix-shell. If you want to compile a piece of software that requires zlib and uses pkg-config to discover it, run <code>nix-shell -p gcc pkgconfig zlib</code> to get into a shell with the appropriate environment variables set. In there, a configure script will work as expected.

This applies to other language environments too. In some cases the expressions to use are a bit different, e.g. because the interpreter needs to be wrapped to have some additional environment variables passed to it. The manual has [https://nixos.org/nixpkgs/manual/#chap-language-support a section] on the subject.

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 == I installed a library but my compiler is not finding it. Why? ==
-With nix, only ''applications'' should be installed into profiles. Libraries are used using nix-shell. If you want to compile a piece of software that requires zlib and uses pkg-config to discover it, run <code>nix-shell -p pkgconfig zlib</code> to get into a shell with the appropriate environment variables set. In there, a configure script will work as expected.
+With nix, only ''applications'' should be installed into profiles. Libraries are used using nix-shell. If you want to compile a piece of software that requires zlib and uses pkg-config to discover it, run <code>nix-shell -p gcc pkgconfig zlib</code> to get into a shell with the appropriate environment variables set. In there, a configure script will work as expected.
 This applies to other language environments too. In some cases the expressions to use are a bit different, e.g. because the interpreter needs to be wrapped to have some additional environment variables passed to it. The manual has [https://nixos.org/nixpkgs/manual/#chap-language-support a section] on the subject.