chore(3p/nix): unvendor tvix 0.1 r/4098

Nothing is using this now, and we'll likely never pick this up again,
but we learned a lot in the process.

Every now and then this breaks in some bizarre way on channel bumps
and it's just a waste of time to maintain that.

Change-Id: Idcf2f5acd4ca7070ce18d7149cbfc0d967dc0a44
Reviewed-on: https://cl.tvl.fyi/c/depot/+/5632
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
Reviewed-by: lukegb <lukegb@tvl.fyi>
Autosubmit: tazjin <tazjin@tvl.su>

1 files changed, 0 insertions, 252 deletions

diff --git a/third_party/nix/src/libstore/profiles.cc b/third_party/nix/src/libstore/profiles.cc
deleted file mode 100644
index 0d44c60cc4e9..000000000000
--- a/third_party/nix/src/libstore/profiles.cc
+++ /dev/null
@@ -1,252 +0,0 @@
-#include "libstore/profiles.hh"
-
-#include <cerrno>
-#include <cstdio>
-
-#include <absl/strings/numbers.h>
-#include <absl/strings/string_view.h>
-#include <absl/strings/strip.h>
-#include <glog/logging.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-#include "libstore/store-api.hh"
-#include "libutil/util.hh"
-
-namespace nix {
-
-static bool cmpGensByNumber(const Generation& a, const Generation& b) {
-  return a.number < b.number;
-}
-
-// Parse a generation out of the format
-// `<profilename>-<generation>-link'.
-static int parseName(absl::string_view profileName, absl::string_view name) {
-  // Consume the `<profilename>-' prefix and and `-link' suffix.
-  if (!(absl::ConsumePrefix(&name, profileName) &&
-        absl::ConsumePrefix(&name, "-") &&
-        absl::ConsumeSuffix(&name, "-link"))) {
-    return -1;
-  }
-
-  int n;
-  if (!absl::SimpleAtoi(name, &n) || n < 0) {
-    return -1;
-  }
-
-  return n;
-}
-
-Generations findGenerations(const Path& profile, int& curGen) {
-  Generations gens;
-
-  Path profileDir = dirOf(profile);
-  std::string profileName = baseNameOf(profile);
-
-  for (auto& i : readDirectory(profileDir)) {
-    int n;
-    if ((n = parseName(profileName, i.name)) != -1) {
-      Generation gen;
-      gen.path = profileDir + "/" + i.name;
-      gen.number = n;
-      struct stat st;
-      if (lstat(gen.path.c_str(), &st) != 0) {
-        throw SysError(format("statting '%1%'") % gen.path);
-      }
-      gen.creationTime = st.st_mtime;
-      gens.push_back(gen);
-    }
-  }
-
-  gens.sort(cmpGensByNumber);
-
-  curGen = pathExists(profile) ? parseName(profileName, readLink(profile)) : -1;
-
-  return gens;
-}
-
-static void makeName(const Path& profile, unsigned int num, Path& outLink) {
-  Path prefix = (format("%1%-%2%") % profile % num).str();
-  outLink = prefix + "-link";
-}
-
-Path createGeneration(const ref<LocalFSStore>& store, const Path& profile,
-                      const Path& outPath) {
-  /* The new generation number should be higher than old the
-     previous ones. */
-  int dummy;
-  Generations gens = findGenerations(profile, dummy);
-
-  unsigned int num;
-  if (!gens.empty()) {
-    Generation last = gens.back();
-
-    if (readLink(last.path) == outPath) {
-      /* We only create a new generation symlink if it differs
-         from the last one.
-
-         This helps keeping gratuitous installs/rebuilds from piling
-         up uncontrolled numbers of generations, cluttering up the
-         UI like grub. */
-      return last.path;
-    }
-
-    num = gens.back().number;
-  } else {
-    num = 0;
-  }
-
-  /* Create the new generation.  Note that addPermRoot() blocks if
-     the garbage collector is running to prevent the stuff we've
-     built from moving from the temporary roots (which the GC knows)
-     to the permanent roots (of which the GC would have a stale
-     view).  If we didn't do it this way, the GC might remove the
-     user environment etc. we've just built. */
-  Path generation;
-  makeName(profile, num + 1, generation);
-  store->addPermRoot(outPath, generation, false, true);
-
-  return generation;
-}
-
-static void removeFile(const Path& path) {
-  if (remove(path.c_str()) == -1) {
-    throw SysError(format("cannot unlink '%1%'") % path);
-  }
-}
-
-void deleteGeneration(const Path& profile, unsigned int gen) {
-  Path generation;
-  makeName(profile, gen, generation);
-  removeFile(generation);
-}
-
-static void deleteGeneration2(const Path& profile, unsigned int gen,
-                              bool dryRun) {
-  if (dryRun) {
-    LOG(INFO) << "would remove generation " << gen;
-  } else {
-    LOG(INFO) << "removing generation " << gen;
-    deleteGeneration(profile, gen);
-  }
-}
-
-void deleteGenerations(const Path& profile,
-                       const std::set<unsigned int>& gensToDelete,
-                       bool dryRun) {
-  PathLocks lock;
-  lockProfile(lock, profile);
-
-  int curGen;
-  Generations gens = findGenerations(profile, curGen);
-
-  if (gensToDelete.find(curGen) != gensToDelete.end()) {
-    throw Error(format("cannot delete current generation of profile %1%'") %
-                profile);
-  }
-
-  for (auto& i : gens) {
-    if (gensToDelete.find(i.number) == gensToDelete.end()) {
-      continue;
-    }
-    deleteGeneration2(profile, i.number, dryRun);
-  }
-}
-
-void deleteGenerationsGreaterThan(const Path& profile, int max, bool dryRun) {
-  PathLocks lock;
-  lockProfile(lock, profile);
-
-  int curGen;
-  bool fromCurGen = false;
-  Generations gens = findGenerations(profile, curGen);
-  for (auto i = gens.rbegin(); i != gens.rend(); ++i) {
-    if (i->number == curGen) {
-      fromCurGen = true;
-      max--;
-      continue;
-    }
-    if (fromCurGen) {
-      if (max != 0) {
-        max--;
-        continue;
-      }
-      deleteGeneration2(profile, i->number, dryRun);
-    }
-  }
-}
-
-void deleteOldGenerations(const Path& profile, bool dryRun) {
-  PathLocks lock;
-  lockProfile(lock, profile);
-
-  int curGen;
-  Generations gens = findGenerations(profile, curGen);
-
-  for (auto& i : gens) {
-    if (i.number != curGen) {
-      deleteGeneration2(profile, i.number, dryRun);
-    }
-  }
-}
-
-void deleteGenerationsOlderThan(const Path& profile, time_t t, bool dryRun) {
-  PathLocks lock;
-  lockProfile(lock, profile);
-
-  int curGen;
-  Generations gens = findGenerations(profile, curGen);
-
-  bool canDelete = false;
-  for (auto i = gens.rbegin(); i != gens.rend(); ++i) {
-    if (canDelete) {
-      assert(i->creationTime < t);
-      if (i->number != curGen) {
-        deleteGeneration2(profile, i->number, dryRun);
-      }
-    } else if (i->creationTime < t) {
-      /* We may now start deleting generations, but we don't
-         delete this generation yet, because this generation was
-         still the one that was active at the requested point in
-         time. */
-      canDelete = true;
-    }
-  }
-}
-
-void deleteGenerationsOlderThan(const Path& profile,
-                                const std::string& timeSpec, bool dryRun) {
-  time_t curTime = time(nullptr);
-  std::string strDays = std::string(timeSpec, 0, timeSpec.size() - 1);
-  int days;
-
-  if (!absl::SimpleAtoi(strDays, &days) || days < 1) {
-    throw Error(format("invalid number of days specifier '%1%'") % timeSpec);
-  }
-
-  time_t oldTime = curTime - days * 24 * 3600;
-
-  deleteGenerationsOlderThan(profile, oldTime, dryRun);
-}
-
-void switchLink(const Path& link, Path target) {
-  /* Hacky. */
-  if (dirOf(target) == dirOf(link)) {
-    target = baseNameOf(target);
-  }
-
-  replaceSymlink(target, link);
-}
-
-void lockProfile(PathLocks& lock, const Path& profile) {
-  lock.lockPaths({profile},
-                 (format("waiting for lock on profile '%1%'") % profile).str());
-  lock.setDeletion(true);
-}
-
-std::string optimisticLockProfile(const Path& profile) {
-  return pathExists(profile) ? readLink(profile) : "";
-}
-
-}  // namespace nix