EDIT: I can’t run gdb at all, even when I set HOME to something else. A transcript of me running strace on gdb (at the bottom) indicates it is loading a python2.7 even though I have no python2.7 installed voluntarily (I use python 3.6.6 here).

When I run python, it works, but when I run gdb python it fails.

[[email protected]:~/Projects/eyeserver/dserver/src]$ python Python 3.6.6 (default, Jun 27 2018, 05:47:41) [GCC 7.3.0] on linux Type “help”, “copyright”, “credits” or “license” for more information. >>> [[email protected]:~/Projects/eyeserver/dserver/src]$ [[email protected]:~/Projects/eyeserver/dserver/src]$ gdb python ImportError: No module named site [[email protected]:~/Projects/eyeserver/dserver/src]$

Trying to work around it with various unrapping also fails:

[[email protected]:~/Projects/eyeserver/dserver/src]$ /nix/store/bwfygfcdvis9wd1c1v51xwnwhw1hx0a0-python3-3.6.6/bin/python Python 3.6.6 (default, Jun 27 2018, 05:47:41) [GCC 7.3.0] on linux Type “help”, “copyright”, “credits” or “license” for more information. >>> [[email protected]:~/Projects/eyeserver/dserver/src]$ [[email protected]:~/Projects/eyeserver/dserver/src]$ gdb /nix/store/bwfygfcdvis9wd1c1v51xwnwhw1hx0a0-python3-3.6.6/bin/python ImportError: No module named site

Nothing I do to the environment helps. I’m happy to compile a new python, etc. I just want to know where to look.

Here’s the a snipped strace of me running GDB at all. it fails and seems to load python2.7 stuff.

[[email protected]:~/Projects/eyeserver/dserver/src]$ HOME=/tmp gdb ImportError: No module named site [[email protected]:~/Projects/eyeserver/dserver/src]$ HOME=/tmp strace gdb execve(“/home/henry/.nix-profile/bin/gdb”, [“gdb”], 0x7ffc32a4f420 /* 91 vars */) = 0 brk(NULL) = 0x2070000 mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3ea92b5000 access(“/etc/ld-nix.so.preload”, R_OK) = -1 ENOENT (No such file or directory) openat(AT_FDCWD, “/run/opengl-driver/lib/tls/haswell/x86_64/libreadline.so.6”, O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) <snip> “/nix/store/6gapz5mrsr917ljsl7brz”…, 4095) = 61 lstat(“/nix”, {st_mode=S_IFDIR|0755, st_size=16, …}) = 0 lstat(“/nix/store”, {st_mode=S_IFDIR|S_ISVTX|0775, st_size=1015774, …}) = 0 lstat(“/nix/store/6gapz5mrsr917ljsl7brzilnmyr7arn5-gdb-8.1.1”, {st_mode=S_IFDIR|0555, st_size=58, …}) = 0 lstat(“/nix/store/6gapz5mrsr917ljsl7brzilnmyr7arn5-gdb-8.1.1/bin”, {st_mode=S_IFDIR|0555, st_size=34, …}) = 0 lstat(“/nix/store/6gapz5mrsr917ljsl7brzilnmyr7arn5-gdb-8.1.1/bin/gdb”, {st_mode=S_IFREG|0555, st_size=27746568, …}) = 0 stat(“/nix/store/6gapz5mrsr917ljsl7brzilnmyr7arn5-gdb-8.1.1/bin/../share/gdb”, {st_mode=S_IFDIR|0555, st_size=56, …}) = 0 lstat(“/nix”, {st_mode=S_IFDIR|0755, st_size=16, …}) = 0 lstat(“/nix/store”, {st_mode=S_IFDIR|S_ISVTX|0775, st_size=1015774, …}) = 0 lstat(“/nix/store/6gapz5mrsr917ljsl7brzilnmyr7arn5-gdb-8.1.1”, {st_mode=S_IFDIR|0555, st_size=58, …}) = 0 lstat(“/nix/store/6gapz5mrsr917ljsl7brzilnmyr7arn5-gdb-8.1.1/bin”, {st_mode=S_IFDIR|0555, st_size=34, …}) = 0 lstat(“/nix/store/6gapz5mrsr917ljsl7brzilnmyr7arn5-gdb-8.1.1/share”, {st_mode=S_IFDIR|0555, st_size=32, …}) = 0 lstat(“/nix/store/6gapz5mrsr917ljsl7brzilnmyr7arn5-gdb-8.1.1/share/gdb”, {st_mode=S_IFDIR|0555, st_size=56, …}) = 0 stat(“/nix/store/2brlr94ahy3a9mvcjy0qbqpv8zrb7b7s-python-2.7.15/lib”, {st_mode=S_IFDIR|0555, st_size=104, …}) = 0 lstat(“/nix”, {st_mode=S_IFDIR|0755, st_size=16, …}) = 0 lstat(“/nix/store”, {st_mode=S_IFDIR|S_ISVTX|0775, st_size=1015774, …}) = 0 lstat(“/nix/store/2brlr94ahy3a9mvcjy0qbqpv8zrb7b7s-python-2.7.15”, {st_mode=S_IFDIR|0555, st_size=58, …}) = 0 lstat(“/nix/store/2brlr94ahy3a9mvcjy0qbqpv8zrb7b7s-python-2.7.15/lib”, {st_mode=S_IFDIR|0555, st_size=104, …}) = 0 rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0 <snip> fstat(1, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 3), …}) = 0 fstat(2, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 3), …}) = 0 readlink(“/nix/store/2brlr94ahy3a9mvcjy0qbqpv8zrb7b7s-python-2.7.15/bin/python”, “python2”, 4096) = 7 readlink(“/nix/store/2brlr94ahy3a9mvcjy0qbqpv8zrb7b7s-python-2.7.15/bin/python2”, “python2.7”, 4096) = 9 readlink(“/nix/store/2brlr94ahy3a9mvcjy0qbqpv8zrb7b7s-python-2.7.15/bin/python2.7”, 0x7ffc0f2436b0, 4096) = -1 EINVAL (Invalid argument) mmap(NULL, 262144, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3ea922f000 brk(0x21fc000) = 0x21fc000 brk(0x21fb000) = 0x21fb000 rt_sigaction(SIGPIPE, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7f3ea85adf10}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0 rt_sigaction(SIGXFSZ, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7f3ea85adf10}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0 getpid() = 8161 rt_sigaction(SIGHUP, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0 <snip> sigaction(SIGINT, {sa_handler=0x7f3ea7d39960, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7f3ea85adf10}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0 stat(“/nix/store/nw1pvz9y3imjjgs4icxy6yslhy9fxs2z-python3-3.6.6-env/lib/python27.zip”, 0x7ffc0f2400e0) = -1 ENOENT (No such file or directory) stat(“/nix/store/nw1pvz9y3imjjgs4icxy6yslhy9fxs2z-python3-3.6.6-env/lib”, {st_mode=S_IFDIR|0555, st_size=134, …}) = 0 stat(“/nix/store/nw1pvz9y3imjjgs4icxy6yslhy9fxs2z-python3-3.6.6-env/lib/python27.zip”, 0x7ffc0f243160) = -1 ENOENT (No such file or directory) stat(“/nix/store/nw1pvz9y3imjjgs4icxy6yslhy9fxs2z-python3-3.6.6-env/lib/python2.7”, 0x7ffc0f2400e0) = -1 ENOENT (No such file or directory) stat(“/nix/store/nw1pvz9y3imjjgs4icxy6yslhy9fxs2z-python3-3.6.6-env/lib”, {st_mode=S_IFDIR|0555, st_size=134, …}) = 0 stat(“/nix/store/nw1pvz9y3imjjgs4icxy6yslhy9fxs2z-python3-3.6.6-env/lib/python2.7”, 0x7ffc0f243160) = -1 ENOENT (No such file or directory) stat(“/nix/store/nw1pvz9y3imjjgs4icxy6yslhy9fxs2z-python3-3.6.6-env/lib/python2.7/plat-linux2”, 0x7ffc0f2400e0) = -1 ENOENT (No such file or directory) stat(“/nix/store/nw1pvz9y3imjjgs4icxy6yslhy9fxs2z-python3-3.6.6-env/lib/python2.7”, 0x7ffc0f2400e0) = -1 ENOENT (No such file or directory) stat(“/nix/store/nw1pvz9y3imjjgs4icxy6yslhy9fxs2z-python3-3.6.6-env/lib”, {st_mode=S_IFDIR|0555, st_size=134, …}) = 0 stat(“/nix/store/nw1pvz9y3imjjgs4icxy6yslhy9fxs2z-python3-3.6.6-env/lib/python2.7/plat-linux2”, 0x7ffc0f243160) = -1 ENOENT (No such file or directory) stat(“/nix/store/nw1pvz9y3imjjgs4icxy6yslhy9fxs2z-python3-3.6.6-env/lib/python2.7/lib-tk”, 0x7ffc0f2400e0) = -1 ENOENT (No such file or directory) stat(“/nix/store/nw1pvz9y3imjjgs4icxy6yslhy9fxs2z-python3-3.6.6-env/lib/python2.7”, 0x7ffc0f2400e0) = -1 ENOENT (No such file or directory) stat(“/nix/store/nw1pvz9y3imjjgs4icxy6yslhy9fxs2z-python3-3.6.6-env/lib”, {st_mode=S_IFDIR|0555, st_size=134, …}) = 0 stat(“/nix/store/nw1pvz9y3imjjgs4icxy6yslhy9fxs2z-python3-3.6.6-env/lib/python2.7/lib-tk”, 0x7ffc0f243160) = -1 ENOENT (No such file or directory) stat(“/nix/store/nw1pvz9y3imjjgs4icxy6yslhy9fxs2z-python3-3.6.6-env/lib/python2.7/lib-old”, 0x7ffc0f2400e0) = -1 ENOENT (No such file or directory) stat(“/nix/store/nw1pvz9y3imjjgs4icxy6yslhy9fxs2z-python3-3.6.6-env/lib/python2.7”, 0x7ffc0f2400e0) = -1 ENOENT (No such file or directory) stat(“/nix/store/nw1pvz9y3imjjgs4icxy6yslhy9fxs2z-python3-3.6.6-env/lib”, {st_mode=S_IFDIR|0555, st_size=134, …}) = 0 stat(“/nix/store/nw1pvz9y3imjjgs4icxy6yslhy9fxs2z-python3-3.6.6-env/lib/python2.7/lib-old”, 0x7ffc0f243160) = -1 ENOENT (No such file or directory) stat(“/nix/store/nw1pvz9y3imjjgs4icxy6yslhy9fxs2z-python3-3.6.6-env/lib/python2.7/lib-dynload”, 0x7ffc0f2400e0) = -1 ENOENT (No such file or directory) stat(“/nix/store/nw1pvz9y3imjjgs4icxy6yslhy9fxs2z-python3-3.6.6-env/lib/python2.7”, 0x7ffc0f2400e0) = -1 ENOENT (No such file or directory) stat(“/nix/store/nw1pvz9y3imjjgs4icxy6yslhy9fxs2z-python3-3.6.6-env/lib”, {st_mode=S_IFDIR|0555, st_size=134, …}) = 0 stat(“/nix/store/nw1pvz9y3imjjgs4icxy6yslhy9fxs2z-python3-3.6.6-env/lib/python2.7/lib-dynload”, 0x7ffc0f243160) = -1 ENOENT (No such file or directory) write(2, “ImportError”, 11ImportError) = 11 write(2, “: “, 2: ) = 2 write(2, “No module named site”, 20No module named site) = 20 write(2, “n”, 1 ) = 1 rt_sigaction(SIGINT, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7f3ea85adf10}, {sa_handler=0x7f3ea7d39960, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7f3ea85adf10}, 8) = 0 exit_group(1) = ? +++ exited with 1 +++ [[email protected]:~/Projects/eyeserver/dserver/src]$ V