nix-shell and gcc version
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Marko Poikonen
Feb 7, 2018, 9:40:06 AM2/7/18
to nix-devel
Hello,
This goes beyond me:
$ nix-shell -p gcc5
[nix-shell:~]$ gcc --version
gcc (GCC) 6.4.0
I am in serious need for gcc 5.4.
Br,
Marko
This goes beyond me:
$ nix-shell -p gcc5
[nix-shell:~]$ gcc --version
gcc (GCC) 6.4.0
I am in serious need for gcc 5.4.
Br,
Marko
Justin Humm
Feb 7, 2018, 9:50:12 AM2/7/18
to Marko Poikonen, nix-devel
Hello Marko,
I experience the following on nixos-17.09:
$ nix-shell -p gcc5 --pure
Copyright (C) 2015 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Maybe you need the --pure flag?
Best,
Justin
Quoting Marko Poikonen (2018-02-07 15:40:06)
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I experience the following on nixos-17.09:
$ nix-shell -p gcc5 --pure
[nix-shell:~]$ gcc --version
gcc (GCC) 5.4.0
Copyright (C) 2015 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Maybe you need the --pure flag?
Best,
Justin
Quoting Marko Poikonen (2018-02-07 15:40:06)
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> For more options, visit https://groups.google.com/d/optout.
Will Dietz
Feb 7, 2018, 10:23:37 AM2/7/18
to Justin Humm, Marko Poikonen, nix-devel
"nix-shell -p" is based on stdenv IIRC, not stdenvNoCC, so it pulls in
default cc (currently gcc6) every time.
This is unfortunate.
Nix 2's "nix run" has better behavior:
-----------------
$ nix run -f channel:nixos-17.09 gcc5
[will@dtznix:~]$ gcc --version
gcc (GCC) 5.4.0
-----------------
Otherwise you can try to do what nix-shell does with your own
expression and feed it to nix-shell? Hopefully using 2 is an option,
simpler :).
Related: why doesn't nix-shell use stdenvNoCC (or "mkShell"), anyway?
Compat concerns?
~Will
> To view this discussion on the web visit https://groups.google.com/d/msgid/nix-devel/151801500980.6574.13507197423635573477%40maschine.
default cc (currently gcc6) every time.
This is unfortunate.
Nix 2's "nix run" has better behavior:
-----------------
$ nix run -f channel:nixos-17.09 gcc5
[will@dtznix:~]$ gcc --version
gcc (GCC) 5.4.0
-----------------
Otherwise you can try to do what nix-shell does with your own
expression and feed it to nix-shell? Hopefully using 2 is an option,
simpler :).
Related: why doesn't nix-shell use stdenvNoCC (or "mkShell"), anyway?
Compat concerns?
~Will
Marko Poikonen
Feb 7, 2018, 11:09:27 AM2/7/18
to nix-devel
On Wednesday, 7 February 2018 16:23:37 UTC+1, Will Dietz wrote:
Nix 2's "nix run" has better behavior:
-----------------
$ nix run -f channel:nixos-17.09 gcc5
[will@dtznix:~]$ gcc --version
gcc (GCC) 5.4.0
Cool thanks that did the trick.
Br,
Marko
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