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1

I have an installation of nix on a Linux system, and I have added the channel nixpkgs-unstable. I can now install packages such as gcc:

% nix-env --install gcc

installing 'gcc-7.4.0'

...

created 78 symlinks in user environment

If I look into a directory such as ~/.nix-defexpr/channels/nixpkgs/pkgs/development/compilers/gcc/, I will discover that there is a variety of versions, all complete with default.nix.

• How can I discover these hidden package versions with ghc-env --query, or some other friendly tool?




• Suppose I wish to install gcc version 8 to my user environment, how should I go about it? Can I obtain several versions of gcc at once?

I have been browsing the voluminous documentation of Nix, but everywhere they say something along the lines of "with Nix, you can install any number of versions at once and they will never conflict" and at the same time "you are supposed to only install one version at a time, that is hardcoded in your channel of choice". What sense does it make?

nix

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asked 1 hour ago

Ignat InsarovIgnat Insarov

10622 bronze badges

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1

I have an installation of nix on a Linux system, and I have added the channel nixpkgs-unstable. I can now install packages such as gcc:

% nix-env --install gcc

installing 'gcc-7.4.0'

...

created 78 symlinks in user environment

If I look into a directory such as ~/.nix-defexpr/channels/nixpkgs/pkgs/development/compilers/gcc/, I will discover that there is a variety of versions, all complete with default.nix.

• How can I discover these hidden package versions with ghc-env --query, or some other friendly tool?




• Suppose I wish to install gcc version 8 to my user environment, how should I go about it? Can I obtain several versions of gcc at once?

I have been browsing the voluminous documentation of Nix, but everywhere they say something along the lines of "with Nix, you can install any number of versions at once and they will never conflict" and at the same time "you are supposed to only install one version at a time, that is hardcoded in your channel of choice". What sense does it make?

nix

share|improve this question

asked 1 hour ago

Ignat InsarovIgnat Insarov

10622 bronze badges

New contributor

Ignat Insarov is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

add a comment | 

I have an installation of nix on a Linux system, and I have added the channel nixpkgs-unstable. I can now install packages such as gcc:

% nix-env --install gcc

installing 'gcc-7.4.0'

...

created 78 symlinks in user environment

If I look into a directory such as ~/.nix-defexpr/channels/nixpkgs/pkgs/development/compilers/gcc/, I will discover that there is a variety of versions, all complete with default.nix.

• How can I discover these hidden package versions with ghc-env --query, or some other friendly tool?




• Suppose I wish to install gcc version 8 to my user environment, how should I go about it? Can I obtain several versions of gcc at once?

I have been browsing the voluminous documentation of Nix, but everywhere they say something along the lines of "with Nix, you can install any number of versions at once and they will never conflict" and at the same time "you are supposed to only install one version at a time, that is hardcoded in your channel of choice". What sense does it make?

nix

share|improve this question

asked 1 hour ago

Ignat InsarovIgnat Insarov

10622 bronze badges

New contributor

Ignat Insarov is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

% nix-env --install gcc

installing 'gcc-7.4.0'

...

created 78 symlinks in user environment

share|improve this question

asked 1 hour ago

Ignat InsarovIgnat Insarov

10622 bronze badges

New contributor

Ignat Insarov is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

share|improve this question

asked 1 hour ago

Ignat InsarovIgnat Insarov

10622 bronze badges

New contributor

Ignat Insarov is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked 1 hour ago

Ignat InsarovIgnat Insarov

10622 bronze badges

New contributor

Ignat Insarov is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked 1 hour ago

Ignat InsarovIgnat Insarov

10622 bronze badges