Follow PEP 0394 and use /usr/bin/env python so that the python in the
users venv is respected. Not that the kitty python files are meant to be
executed standalone anyway, but, whatever.
Fixes#6810
Uses a private API that allows us to control the amount of blurring.
While using a private API is obviously not ideal, it is used by both
iTerm.app and Apple's own Terminal.app, so hopefully it should stick
around. Fixes#6135
With large objects, use of -fpic will fail to link on certain
architectures due to size limitations of the global offset table (GOT).
For example, the link stage for glfw-wayland.so fails on sparc64, as
below. Using -fPIC avoids these size limitations.
./glfw/osmesa_context.c:73:(.text+0xf2c): relocation truncated to fit: R_SPARC_GOT13 against symbol `_glfw' defined in .bss section in /tmp/glfw-wayland.so.SYvdxr.ltrans0.ltrans.o
/tmp/glfw-wayland.so.SYvdxr.ltrans0.ltrans.o: in function `swapIntervalEGL':
./glfw/egl_context.c:238:(.text+0xf68): relocation truncated to fit: R_SPARC_GOT13 against symbol `_glfw' defined in .bss section in /tmp/glfw-wayland.so.SYvdxr.ltrans0.ltrans.o
/tmp/glfw-wayland.so.SYvdxr.ltrans0.ltrans.o: in function `destroyContextOSMesa':
./glfw/osmesa_context.c:80:(.text+0x10a4): relocation truncated to fit: R_SPARC_GOT13 against symbol `_glfw' defined in .bss section in /tmp/glfw-wayland.so.SYvdxr.ltrans0.ltrans.o
/tmp/glfw-wayland.so.SYvdxr.ltrans0.ltrans.o: in function `data_offer_action':
./glfw/wl_window.c:1692:(.text+0x15e4): relocation truncated to fit: R_SPARC_GOT13 against symbol `_glfw' defined in .bss section in /tmp/glfw-wayland.so.SYvdxr.ltrans0.ltrans.o
/tmp/glfw-wayland.so.SYvdxr.ltrans0.ltrans.o: in function `data_offer_source_actions':
./glfw/wl_window.c:1683:(.text+0x1648): relocation truncated to fit: R_SPARC_GOT13 against symbol `_glfw' defined in .bss section in /tmp/glfw-wayland.so.SYvdxr.ltrans0.ltrans.o
/tmp/glfw-wayland.so.SYvdxr.ltrans0.ltrans.o: in function `keyboardHandleRepeatInfo':
./glfw/wl_init.c:471:(.text+0x1704): relocation truncated to fit: R_SPARC_GOT13 against symbol `_glfw' defined in .bss section in /tmp/glfw-wayland.so.SYvdxr.ltrans0.ltrans.o
/tmp/glfw-wayland.so.SYvdxr.ltrans0.ltrans.o: in function `checkScaleChange':
./glfw/wl_window.c:55:(.text+0x1768): relocation truncated to fit: R_SPARC_GOT13 against symbol `_glfw' defined in .bss section in /tmp/glfw-wayland.so.SYvdxr.ltrans0.ltrans.o
/tmp/glfw-wayland.so.SYvdxr.ltrans0.ltrans.o: in function `primary_selection_copy_callback_done':
./glfw/wl_window.c:1833:(.text+0x18bc): relocation truncated to fit: R_SPARC_GOT13 against symbol `_glfw' defined in .bss section in /tmp/glfw-wayland.so.SYvdxr.ltrans0.ltrans.o
/tmp/glfw-wayland.so.SYvdxr.ltrans0.ltrans.o: in function `clipboard_copy_callback_done':
./glfw/wl_window.c:1825:(.text+0x1910): relocation truncated to fit: R_SPARC_GOT13 against symbol `_glfw' defined in .bss section in /tmp/glfw-wayland.so.SYvdxr.ltrans0.ltrans.o
/tmp/glfw-wayland.so.SYvdxr.ltrans0.ltrans.o: in function `primary_selection_source_canceled':
./glfw/wl_window.c:1582:(.text+0x1968): relocation truncated to fit: R_SPARC_GOT13 against symbol `_glfw' defined in .bss section in /tmp/glfw-wayland.so.SYvdxr.ltrans0.ltrans.o
/tmp/glfw-wayland.so.SYvdxr.ltrans0.ltrans.o: in function `data_source_canceled':
./glfw/wl_window.c:1576:(.text+0x19c0): additional relocation overflows omitted from the output
collect2: error: ld returned 1 exit status
