···

       
42
       
 
       


     

       
43
       
 
       
-   For allowing the build of a broken package once, you can use an environment variable for a single invocation of the nix tools:

     

       
44
       
 
       


     

       
45
       
-
       
    ```shellSession

     

       
46
       
 
       
    $ export NIXPKGS_ALLOW_BROKEN=1

     

       
47
       
 
       
    ```

     

       
48
       
 
       


     
···

       
61
       
 
       


     

       
62
       
 
       
-   For allowing the build of an unsupported package once, you can use an environment variable for a single invocation of the nix tools:

     

       
63
       
 
       


     

       
64
       
-
       
    ```shellSession

     

       
65
       
 
       
    $ export NIXPKGS_ALLOW_UNSUPPORTED_SYSTEM=1

     

       
66
       
 
       
    ```

     

       
67
       
 
       


     
···

       
81
       
 
       


     

       
82
       
 
       
-   To temporarily allow all unfree packages, you can use an environment variable for a single invocation of the nix tools:

     

       
83
       
 
       


     

       
84
       
-
       
    ```shellSession

     

       
85
       
 
       
    $ export NIXPKGS_ALLOW_UNFREE=1

     

       
86
       
 
       
    ```

     

       
87
       
 
       


     
···

       
134
       
 
       


     

       
135
       
 
       
-   To temporarily allow all insecure packages, you can use an environment variable for a single invocation of the nix tools:

     

       
136
       
 
       


     

       
137
       
-
       
    ```shellSession

     

       
138
       
 
       
    $ export NIXPKGS_ALLOW_INSECURE=1

     

       
139
       
 
       
    ```

     

       
140
       
 
       


     
···

       
294
       
 
       


     

       
295
       
 
       
For this to work fully, you must also have this script sourced when you are logged in. Try adding something like this to your `~/.profile` file:

     

       
296
       
 
       


     

       
297
       
-
       
```shellSession

     

       
298
       
 
       
#!/bin/sh

     

       
299
       
 
       
if [ -d $HOME/.nix-profile/etc/profile.d ]; then

     

       
300
       
 
       
  for i in $HOME/.nix-profile/etc/profile.d/*.sh; do

     

···

       
42
       
 
       


     

       
43
       
 
       
-   For allowing the build of a broken package once, you can use an environment variable for a single invocation of the nix tools:

     

       
44
       
 
       


     

       
45
       
+
       
    ```ShellSession

     

       
46
       
 
       
    $ export NIXPKGS_ALLOW_BROKEN=1

     

       
47
       
 
       
    ```

     

       
48
       
 
       


     
···

       
61
       
 
       


     

       
62
       
 
       
-   For allowing the build of an unsupported package once, you can use an environment variable for a single invocation of the nix tools:

     

       
63
       
 
       


     

       
64
       
+
       
    ```ShellSession

     

       
65
       
 
       
    $ export NIXPKGS_ALLOW_UNSUPPORTED_SYSTEM=1

     

       
66
       
 
       
    ```

     

       
67
       
 
       


     
···

       
81
       
 
       


     

       
82
       
 
       
-   To temporarily allow all unfree packages, you can use an environment variable for a single invocation of the nix tools:

     

       
83
       
 
       


     

       
84
       
+
       
    ```ShellSession

     

       
85
       
 
       
    $ export NIXPKGS_ALLOW_UNFREE=1

     

       
86
       
 
       
    ```

     

       
87
       
 
       


     
···

       
134
       
 
       


     

       
135
       
 
       
-   To temporarily allow all insecure packages, you can use an environment variable for a single invocation of the nix tools:

     

       
136
       
 
       


     

       
137
       
+
       
    ```ShellSession

     

       
138
       
 
       
    $ export NIXPKGS_ALLOW_INSECURE=1

     

       
139
       
 
       
    ```

     

       
140
       
 
       


     
···

       
294
       
 
       


     

       
295
       
 
       
For this to work fully, you must also have this script sourced when you are logged in. Try adding something like this to your `~/.profile` file:

     

       
296
       
 
       


     

       
297
       
+
       
```ShellSession

     

       
298
       
 
       
#!/bin/sh

     

       
299
       
 
       
if [ -d $HOME/.nix-profile/etc/profile.d ]; then

     

       
300
       
 
       
  for i in $HOME/.nix-profile/etc/profile.d/*.sh; do

     

···

       
111
       
 
       


     

       
112
       
 
       
This overlay uses Intel's MKL library for both BLAS and LAPACK interfaces. Note that the same can be accomplished at runtime using `LD_LIBRARY_PATH` of `libblas.so.3` and `liblapack.so.3`. For instance:

     

       
113
       
 
       


     

       
114
       
-
       
```shellSession

     

       
115
       
 
       
$ LD_LIBRARY_PATH=$(nix-build -A mkl)/lib:$LD_LIBRARY_PATH nix-shell -p octave --run octave

     

       
116
       
 
       
```

     

       
117
       
 
       


     

···

       
111
       
 
       


     

       
112
       
 
       
This overlay uses Intel's MKL library for both BLAS and LAPACK interfaces. Note that the same can be accomplished at runtime using `LD_LIBRARY_PATH` of `libblas.so.3` and `liblapack.so.3`. For instance:

     

       
113
       
 
       


     

       
114
       
+
       
```ShellSession

     

       
115
       
 
       
$ LD_LIBRARY_PATH=$(nix-build -A mkl)/lib:$LD_LIBRARY_PATH nix-shell -p octave --run octave

     

       
116
       
 
       
```

     

       
117