1these 5 derivations will be built:2 /nix/store/3hrh09lf7sn9icx0c2znl51jfyp8394a-efi-directory.drv3 /nix/store/b0l2sc283myg0xxsfq25djfzk3agv6lx-efi-image_eltorito.drv4 /nix/store/g95039jnk9yl86wjd6fmar4gh5ajbvkh-closure-info.drv5 /nix/store/rb4w014gxgp2skkxxz8wn214mn2lkidg-isolinux.cfg.drv6 /nix/store/464ha1kv4df6aj0a3yk8wh26wxrr7xps-spaces-os.iso.drv7building '/nix/store/rb4w014gxgp2skkxxz8wn214mn2lkidg-isolinux.cfg.drv'8building '/nix/store/g95039jnk9yl86wjd6fmar4gh5ajbvkh-closure-info.drv'9building '/nix/store/3hrh09lf7sn9icx0c2znl51jfyp8394a-efi-directory.drv'10closure-info> tribuchet: building on gi-build-x86-0211isolinux.cfg> tribuchet: building on gi-build-x86-0112efi-directory> tribuchet: building on gi-build-x86-0113closure-info> structuredAttrs is enabled14efi-directory> Building GRUB with modules:15efi-directory> - fat16efi-directory> - iso966017efi-directory> - part_gpt18efi-directory> - part_msdos19efi-directory> - normal20efi-directory> - boot21efi-directory> - linux22efi-directory> - configfile23efi-directory> - loopback24efi-directory> - chain25efi-directory> - halt26efi-directory> - efifwsetup27efi-directory> - efi_gop28efi-directory> - ls29efi-directory> - search30efi-directory> - search_label31efi-directory> - search_fs_uuid32efi-directory> - search_fs_file33efi-directory> - echo34efi-directory> - serial35efi-directory> - gfxmenu36efi-directory> - gfxterm37efi-directory> - gfxterm_background38efi-directory> - gfxterm_menu39efi-directory> - test40efi-directory> - loadenv41efi-directory> - all_video42efi-directory> - videoinfo43efi-directory> - png44efi-directory> Adding additional modules:45efi-directory> - efi_uga46efi-directory> '/nix/store/c6zqczb7nhr8754qqkpjchyvkxwnch71-refind-0.14.2/share/refind/refind_x64.efi' -> '/nix/store/a3s9l74b7d300i0hbgh4wglglk7is9gv-efi-directory/EFI/BOOT/refind_x64.efi'47building '/nix/store/b0l2sc283myg0xxsfq25djfzk3agv6lx-efi-image_eltorito.drv'48efi-image_eltorito> tribuchet: building on gi-build-x86-0249efi-image_eltorito> Usage size: 209715250efi-image_eltorito> Image size: 314572851efi-image_eltorito> mkfs.fat 4.2 (2021-01-31)52efi-image_eltorito> Copying BOOTX64.EFI53efi-image_eltorito> Copying grub.cfg54efi-image_eltorito> Copying refind_x64.efi55efi-image_eltorito> fsck.fat 4.2 (2021-01-31)56efi-image_eltorito> Checking we can access the last sector of the filesystem57efi-image_eltorito> Boot sector contents:58efi-image_eltorito> System ID "mkfs.fat"59efi-image_eltorito> Media byte 0xf8 (hard disk)60efi-image_eltorito> 512 bytes per logical sector61efi-image_eltorito> 2048 bytes per cluster62efi-image_eltorito> 1 reserved sector63efi-image_eltorito> First FAT starts at byte 512 (sector 1)64efi-image_eltorito> 2 FATs, 12 bit entries65efi-image_eltorito> 2560 bytes per FAT (= 5 sectors)66efi-image_eltorito> Root directory starts at byte 5632 (sector 11)67efi-image_eltorito> 512 root directory entries68efi-image_eltorito> Data area starts at byte 22016 (sector 43)69efi-image_eltorito> 1525 data clusters (3123200 bytes)70efi-image_eltorito> 32 sectors/track, 2 heads71efi-image_eltorito> 0 hidden sectors72efi-image_eltorito> 6144 sectors total73efi-image_eltorito> Checking for unused clusters.74efi-image_eltorito> /nix/store/706nzzvnn6b1l1dfi88rp01jsivc5mxa-efi-image_eltorito: 6 files, 719/1525 clusters75building '/nix/store/464ha1kv4df6aj0a3yk8wh26wxrr7xps-spaces-os.iso.drv'76spaces-os.iso> tribuchet: building on gi-build-x86-0177spaces-os.iso> structuredAttrs is enabled78spaces-os.iso> Parallel mksquashfs: Using 32 processors79spaces-os.iso> Creating 4.0 filesystem on nix-store.squashfs, block size 1048576.