mirror of
https://github.com/nix-community/home-manager
synced 2024-12-25 03:09:47 +01:00
b3a9fb9d05
In most cases where this function is used, suppressing only the standard output is more appropriate. Culling diagnostic output hides error messages and makes debugging more difficult and confusing. `$DRY_RUN_NULL`, which the `--silence` flag replaced, was used both for suppressing standard output on its own, and for doing so along with diagnostic output; however, when the `run` function was added this distinction was lost, and both outputs would be discarded. This reintroduces the needed functionality, and changes usages of `--silence` to `--quiet` where previously only standard output was suppressed, or where this should have probably been the case anyway. Change-Id: Ifb1b52a1d1eea0117261c782d686ad7c71b43162
195 lines
7 KiB
Bash
Executable file
195 lines
7 KiB
Bash
Executable file
# Moves the existing profile from /nix or $XDG_STATE_HOME/home-manager to
|
|
# $XDG_STATE_HOME/nix to match changed behavior in Nix 2.14. See
|
|
# https://github.com/NixOS/nix/pull/5226.
|
|
function migrateProfile() {
|
|
declare -r stateHome="${XDG_STATE_HOME:-$HOME/.local/state}"
|
|
declare -r userNixStateDir="$stateHome/nix"
|
|
declare -r hmStateDir="$stateHome/home-manager"
|
|
|
|
declare -r globalNixStateDir="${NIX_STATE_DIR:-/nix/var/nix}"
|
|
declare -r globalProfilesDir="$globalNixStateDir/profiles/per-user/$USER"
|
|
|
|
if [[ -e $globalProfilesDir/home-manager ]]; then
|
|
declare -r oldProfilesDir="$globalProfilesDir"
|
|
elif [[ -e $hmStateDir/profiles/home-manager ]]; then
|
|
declare -r oldProfilesDir="$hmStateDir/profiles"
|
|
fi
|
|
|
|
declare -r newProfilesDir="$userNixStateDir/profiles"
|
|
|
|
if [[ -v oldProfilesDir && -e $newProfilesDir ]]; then
|
|
if [[ ! -e $newProfilesDir/home-manager ]]; then
|
|
_i 'Migrating profile from %s to %s' "$oldProfilesDir" "$newProfilesDir"
|
|
for p in "$oldProfilesDir"/home-manager-*; do
|
|
declare name="${p##*/}"
|
|
nix-store --realise "$p" --add-root "$newProfilesDir/$name" > /dev/null
|
|
done
|
|
cp -P "$oldProfilesDir/home-manager" "$newProfilesDir"
|
|
fi
|
|
|
|
rm "$oldProfilesDir/home-manager" "$oldProfilesDir"/home-manager-*
|
|
fi
|
|
}
|
|
|
|
function setupVars() {
|
|
declare -r stateHome="${XDG_STATE_HOME:-$HOME/.local/state}"
|
|
declare -r userNixStateDir="$stateHome/nix"
|
|
declare -gr hmStatePath="$stateHome/home-manager"
|
|
declare -r hmGcrootsDir="$hmStatePath/gcroots"
|
|
|
|
declare -r globalNixStateDir="${NIX_STATE_DIR:-/nix/var/nix}"
|
|
declare -r globalProfilesDir="$globalNixStateDir/profiles/per-user/$USER"
|
|
declare -r globalGcrootsDir="$globalNixStateDir/gcroots/per-user/$USER"
|
|
|
|
# If the user Nix profiles path exists, then place the HM profile there.
|
|
# Otherwise, if the global Nix per-user state directory exists then use
|
|
# that. If neither exists, then we give up.
|
|
#
|
|
# shellcheck disable=2174
|
|
if [[ -d $userNixStateDir/profiles ]]; then
|
|
declare -r profilesDir="$userNixStateDir/profiles"
|
|
elif [[ -d $globalProfilesDir ]]; then
|
|
declare -r profilesDir="$globalProfilesDir"
|
|
else
|
|
_iError 'Could not find suitable profile directory, tried %s and %s' \
|
|
"$userNixStateDir/profiles" "$globalProfilesDir" >&2
|
|
exit 1
|
|
fi
|
|
|
|
declare -gr hmDataPath="${XDG_DATA_HOME:-$HOME/.local/share}/home-manager"
|
|
declare -gr genProfilePath="$profilesDir/home-manager"
|
|
declare -gr newGenPath="@GENERATION_DIR@";
|
|
declare -gr newGenGcPath="$hmGcrootsDir/current-home"
|
|
declare -gr legacyGenGcPath="$globalGcrootsDir/current-home"
|
|
|
|
declare greatestGenNum
|
|
greatestGenNum=$( \
|
|
nix-env --list-generations --profile "$genProfilePath" \
|
|
| tail -1 \
|
|
| sed -E 's/ *([[:digit:]]+) .*/\1/')
|
|
|
|
if [[ -n $greatestGenNum ]] ; then
|
|
declare -gr oldGenNum=$greatestGenNum
|
|
declare -gr newGenNum=$((oldGenNum + 1))
|
|
else
|
|
declare -gr newGenNum=1
|
|
fi
|
|
|
|
if [[ -e $genProfilePath ]] ; then
|
|
declare -g oldGenPath
|
|
oldGenPath="$(readlink -e "$genProfilePath")"
|
|
fi
|
|
|
|
_iVerbose "Sanity checking oldGenNum and oldGenPath"
|
|
if [[ -v oldGenNum && ! -v oldGenPath
|
|
|| ! -v oldGenNum && -v oldGenPath ]]; then
|
|
_i $'The previous generation number and path are in conflict! These\nmust be either both empty or both set but are now set to\n\n \'%s\' and \'%s\'\n\nIf you don\'t mind losing previous profile generations then\nthe easiest solution is probably to run\n\n rm %s/home-manager*\n rm %s/current-home\n\nand trying home-manager switch again. Good luck!' \
|
|
"${oldGenNum:-}" "${oldGenPath:-}" \
|
|
"$profilesDir" "$hmGcrootsDir"
|
|
exit 1
|
|
fi
|
|
}
|
|
|
|
# Helper used to list content of a `nix profile` profile.
|
|
function nixProfileList() {
|
|
# We attempt to use `--json` first (added in Nix 2.17). Otherwise attempt to
|
|
# parse the legacy output format.
|
|
{
|
|
nix profile list --json 2>/dev/null \
|
|
| jq -r --arg name "$1" '.elements[].storePaths[] | select(endswith($name))'
|
|
} || {
|
|
nix profile list \
|
|
| { grep "$1\$" || test $? = 1; } \
|
|
| cut -d ' ' -f 4
|
|
}
|
|
}
|
|
|
|
# Helper used to remove a package from a Nix profile. Supports both `nix-env`
|
|
# and `nix profile`.
|
|
function nixProfileRemove() {
|
|
# We don't use `cfg.profileDirectory` here because it defaults to
|
|
# `/etc/profiles/per-user/<user>` which is constructed by NixOS or
|
|
# nix-darwin and won't require uninstalling `home-manager-path`.
|
|
if [[ -e $HOME/.nix-profile/manifest.json \
|
|
|| -e ${XDG_STATE_HOME:-$HOME/.local/state}/nix/profile/manifest.json ]] ; then
|
|
nixProfileList "$1" | xargs -rt $DRY_RUN_CMD nix profile remove $VERBOSE_ARG
|
|
else
|
|
if nix-env -q | grep -q "^$1$"; then
|
|
run --quiet nix-env -e "$1"
|
|
fi
|
|
fi
|
|
}
|
|
|
|
function checkUsername() {
|
|
local expectedUser="$1"
|
|
|
|
if [[ "$USER" != "$expectedUser" ]]; then
|
|
_iError 'Error: USER is set to "%s" but we expect "%s"' "$USER" "$expectedUser"
|
|
exit 1
|
|
fi
|
|
}
|
|
|
|
function checkHomeDirectory() {
|
|
local expectedHome="$1"
|
|
|
|
if ! [[ $HOME -ef $expectedHome ]]; then
|
|
_iError 'Error: HOME is set to "%s" but we expect "%s"' "$HOME" "$expectedHome"
|
|
exit 1
|
|
fi
|
|
}
|
|
|
|
# Note, the VERBOSE_ECHO variable is deprecated and should not be used inside
|
|
# the Home Manager project. It is provided here for backwards compatibility.
|
|
if [[ -v VERBOSE ]]; then
|
|
export VERBOSE_ECHO=echo
|
|
export VERBOSE_ARG="--verbose"
|
|
export VERBOSE_RUN=""
|
|
else
|
|
export VERBOSE_ECHO=true
|
|
export VERBOSE_ARG=""
|
|
export VERBOSE_RUN=true
|
|
fi
|
|
|
|
_i "Starting Home Manager activation"
|
|
|
|
# Verify that we can connect to the Nix store and/or daemon. This will
|
|
# also create the necessary directories in profiles and gcroots.
|
|
_iVerbose "Sanity checking Nix"
|
|
nix-build --expr '{}' --no-out-link
|
|
|
|
# Also make sure that the Nix profiles path is created.
|
|
nix-env -q > /dev/null 2>&1 || true
|
|
|
|
migrateProfile
|
|
setupVars
|
|
|
|
# Note, the DRY_RUN_CMD and DRY_RUN_NULL variables are deprecated and should not
|
|
# be used inside the Home Manager project. They are provided here for backwards
|
|
# compatibility.
|
|
if [[ -v DRY_RUN ]] ; then
|
|
_i "This is a dry run"
|
|
export DRY_RUN_CMD=echo
|
|
export DRY_RUN_NULL=/dev/stdout
|
|
else
|
|
_iVerbose "This is a live run"
|
|
export DRY_RUN_CMD=""
|
|
export DRY_RUN_NULL=/dev/null
|
|
fi
|
|
|
|
if [[ -v VERBOSE ]]; then
|
|
_i 'Using Nix version: %s' "$(nix-env --version)"
|
|
fi
|
|
|
|
_iVerbose "Activation variables:"
|
|
if [[ -v oldGenNum ]] ; then
|
|
verboseEcho " oldGenNum=$oldGenNum"
|
|
verboseEcho " oldGenPath=$oldGenPath"
|
|
else
|
|
verboseEcho " oldGenNum undefined (first run?)"
|
|
verboseEcho " oldGenPath undefined (first run?)"
|
|
fi
|
|
verboseEcho " newGenPath=$newGenPath"
|
|
verboseEcho " newGenNum=$newGenNum"
|
|
verboseEcho " genProfilePath=$genProfilePath"
|
|
verboseEcho " newGenGcPath=$newGenGcPath"
|
|
verboseEcho " legacyGenGcPath=$legacyGenGcPath"
|